Thursday, May 26, 2011

Non-disclosure and trial fairness

An appellate court often has to ask whether a trial was fair. Statutory requirements for allowing conviction appeals usually include "a miscarriage of justice". What does that phrase mean for the purposes of assessing whether the trial was fair? The United Kingdom Supreme Court addressed this in Fraser v HM Advocate [2011] UKSC 24 (25 May 2011).

In this case information had not been disclosed to the defence, and had it been disclosed the conduct of the case for each side would have been different. Therefore, non-disclosure here went to the question of trial fairness [32].

The question of trial fairness is not answered by considering what verdict the appellate judges would have reached at a hypothetical trial [38]:

"One cannot, of course, avoid making some assumptions as how the trial might have been conducted if the material had been disclosed to the defence. It will always be a question of degree as to how far it is proper to go in carrying out that exercise. But the purpose of doing this is to assess the extent to which, having regard to the way the case was conducted by the Crown, the material would have weakened the Crown case or strengthened the case for the defence. It is on the case as presented at the trial that the court must concentrate, rather than the case as it might have been presented. It is not for us to speculate as to what the case might have been, much less how the jury would have reacted to it. What the Crown asks us to do, and what it persuaded the Appeal Court to do, was to consider the case on the basis that the discovery of the rings on 7 May was indicative of the appellant's guilt for completely different reasons from those advanced at the trial. In effect we were being asked to deal with the case as if we were a new jury trying the case for the first time. This is not permissible. Our task is quite different but entirely clear. As the Appeal Court said in McCreight v H M Advocate [2009] HCJAC 69, 2009 SCCR 743, para 95, it is not the court's task to decide what the outcome of the trial would have been if the trial had been conducted on an entirely different basis. We must ask ourselves whether, in the light of the undisclosed evidence, there is a real possibility that the jury at this trial would have arrived at a different verdict."
The trial would have been unfair if there was a real possibility that had the error not occurred the jury would have reached a different verdict.

The case illustrates how an appellate court should apply this test. At trial the prosecution had alleged that the defendant's guilt of his wife's murder was demonstrated by her rings that could only have been found where they were if he had removed them from her corpse. The non-disclosed evidence was that the rings had been at that location before she died.

"[39] The proposition that the appellant had returned the rings to the bathroom on 7 May was, as the Advocate Depute said in his address to the jury, the cornerstone of the Crown's case. It is clear, in view of the direction that was then given to them by the trial judge, that the jury must have concluded that the appellant put the rings in the bathroom on 7 May. This was the basis for the Crown's theory that he had obtained the rings from the deceased's dead body and had placed them in the bathroom to create the impression that she had left the matrimonial home with the intention of turning her back on the life that she had had there. This theory would have been undermined by the evidence of PC Lynch and WPC Clark. It would have been challenged by lines of cross-examination of the Crown witnesses that were never developed at the trial, and by questions that were never put to the appellant in chief or in re-examination. The point could have been made that it was improbable that, if the rings were in the bathroom on 28 and 29 April when the police visited the house, the appellant would have removed them and then chosen to return them on 7 May. The theory that he removed them from the dead body would, if the evidence of PC Lynch and WPC Clark were to be accepted, have been untenable. These and other arguments that the defence would have been able to develop would have struck at the heart of the case that the Crown presented. The trial would have been significantly different had the material that was not disclosed been available. There is a real possibility that this would have been sufficient to raise a reasonable doubt about the Crown's case that the appellant returned the rings to the bathroom on 7 May. If that were so, the jury's verdict would be bound in view of the trial judge's direction to have been different."
It was the real possibility of a different verdict that made the trial unfair.

Non-disclosure significantly affected the course of the trial. This was not a case of freshly discovered evidence, although I think the difference should be immaterial because the ultimate question is whether there is a real possibility that the omission affected the verdict.

I have suggested that all conviction appeals raise issues of trial fairness. This is because a fair trial is one where the law is properly applied to facts that are determined impartially. "Impartially" is used in a wide sense to include actual and apparent bias as well as inaccuracy. Even appeals challenging jurisdiction raise fairness in this sense, as without jurisdiction the law is not properly applied. Fresh evidence appeals also concern fairness, as the newly discovered evidence may demonstrate a real possibility that the verdict was wrong. There can be unfairness even if the verdict was not affected, where the law was not properly applied, but this was not that sort of appeal.

I have recently (7 April 2011) mentioned misuse of hypotheticals by appellate courts, and have also criticised the usurpation of the jury role by appeal judges, for example here (9 July 2009) and here (25 June 2007), and here (16 January 2006).

Wednesday, May 25, 2011

Writing for judges

Do not even consider living a day longer without reading these interviews with the Justices of the United States Supreme Court: The Scribes Journal of Legal Writing (2010) vol 13, available here.

Because brevity wins, I leave it at that, except to mention this teaser by Roberts CJ:

"What the academy is doing, as far as I can tell, is largely of no use or interest to people who actually practice law."

Thursday, May 19, 2011

Avoiding the paperwork

The United States Supreme Court has handed police what may seem to be a legal way of searching homes without the need to obtain warrants: Kentucky v King USSC No 09-1272 (16 May 2011). When should a defendant's suspicious behaviour be ignored when the adequacy of grounds for a warrantless search is being assessed by a court?

The fundamental requirement is that there should be reasonable grounds for a search. The police need not apply for a search warrant, even if they have grounds to obtain one. The opinion of the Court, delivered by Alito J and joined by Roberts CJ, Scalia, Thomas, Kennedy, Breyer, Sotomayor and Kagan JJ (Ginsburg J delivered a dissenting opinion), mentioned five reasons for not requiring a warrant. They are set out at p 12 of the slip opinion. I summarise:

  1. The police may wish to speak to the occupier to see if it is worth getting a warrant.
  2. The police may want to ask the occupier for consent because that would be easier.
  3. They may want more evidence before submitting a marginal application for a warrant.
  4. They may want evidence to justify a broader warrant than they currently have grounds for.
  5. They may not want to disclose that they have grounds for a warrant because that might alert other suspects.
These were held to be legitimate law enforcement strategies. There will, I acknowledge, be occasions when resort to them is reasonable. It may be absurd to require the police to hold off conducting a search while they apply for a warrant, as indeed it would have been on the facts of the present case. However, the danger is that the safeguards involved in the warrant procedure will be cast aside in favour of expedience on the basis of an imagined urgency. It would be easy for the police to claim that they heard what seemed to be an attempt to destroy evidence, and a citizen subject to warrantless search of his home would be unlikely to be able credibly to challenge its legality. It would be inappropriate for a judge to take any but a very cautious approach to evaluating the credibility of police claims of such urgency.



Nor is it appropriate to pretend that the police may always behave as if they were private citizens as far as door-knocking is concerned, as the majority do at p 16. Private citizens are not state agents collecting evidence to prosecute suspected offenders. It is disingenuous for the Court to hold that occupiers may "stand on their constitutional rights" and not answer the door or allow police entry, but if they "elect to attempt to destroy evidence [they] have only themselves to blame for the warrantless exigent-circumstances search that may ensue."

One would think that, on this approach, a refusal by an occupier to allow police entry would be understood by the police to be an attempt to preserve an opportunity to destroy evidence, and would therefore be justification for a warrantless entry and search.

The opportunities for abuse of powers in this context are such that, for people who regard the Fourth Amendment as a proper restraint on executive power, Ginsburg J's dissent may be considered the sole voice of reason in this case.


But the case is not about random door-knocking by the police. The police believed that the smell of cannabis was coming from a specific apartment. 

The ratio of this case is that in deciding whether a warrantless search was reasonable the court will need to consider all the circumstances, and unreasonable police conduct does not give rise to reasonable grounds. This is unobjectionable as a legal rule. If it had been unreasonable for the police to knock on the door in this case, the police would not have been able to rely on subsequent inferences they drew as to risk of destruction of evidence (the exigency). There was no evidence here (pp 17-18) that the police had acted unreasonably prior to entry, so (p 19) the exigency justified the warrantless entry. This was on the Court's assumption, for the purposes of argument (p 17), that there was in fact an exigency here. This assumption was only necessary if, without the exigency, there would have been inadequate grounds for entry. So the police here had reasonable grounds for knocking on the door but, at that point, not for entry, but when (if) the exigency occurred they had (would have had) reasonable grounds for entry. The case was remanded to the Kentucky Supreme Court for further proceedings not inconsistent with the Court's opinion.

A strange thing about this case is why exigent circumstances were relevant. If the police smell cannabis ("marijuana") smoke and establish that it is coming from private property, they would have reasonable grounds to believe that an offence was being committed and so could search without warrant:  for example, R v Gurnick [1999] NZCA 19, (1999) 16 CRNZ 513 (CA). But the position is different in the US, where there is a stronger preference for grounds to be assessed by a neutral official: Johnson v United States, 333 U.S. 10 (1948). In that case the smell of opium from a hotel room, without the risk of a suspect fleeing, or of destruction of evidence, was not grounds for a warrantless search.

Counter-intuitive evidence: should neutrality be sought?

Correction of wrong intuitions is important to prevent jury bias. Commonly held assumptions about the way a complainant should behave may unfairly affect the jury's assessment of that person's credibility.

Delay in complaining, or the continuation of a relationship between the complainant and the defendant, might be thought to undermine the credibility of the complainant. They may indeed undermine credibility on the facts of a particular case, but it would be wrong for the jury to apply a rule of thumb when assessing the evidence.

In M (CA23/2009) v R [2011] NZCA 191 (18 May 2011) the New Zealand Court of Appeal considered ways of countering the wrong intuitions that jurors may have about the significance of such circumstances to credibility. It referred in particular to decisions of the Supreme Court of Canada, R v DD 2000 SCC 43, [2000] 2 SCR 275, and the Court of Appeal of England and Wales, R v Miller [2010] EWCA Crim 1578. Expert witnesses may give evidence on the counter-intuitive significance of such circumstances, the judge may direct the jury on the dangers of making assumptions, or counsel may agree on a statement to the jury on the point.

Those techniques of countering wrong intuitions are aimed, said the Court in M(CA23/2009) at [25], adopting a comment by the New Zealand Law Commission, at restoring a complainant's credibility from a debit balance because of jury misapprehension, back to a zero or neutral balance. It needs to be added that the defendant should also be allowed to use these techniques to prevent wrong intuitions being used against him.

We might wonder whether the aim of setting the credibility balance back to neutral is necessarily correct. Some kinds of behaviour may well indicate reliability in general. Not everything is neutral. Delay may be neutral, but a quick complaint may in the generality of cases indicate reliability. The continuation of an apparently good relationship between the complainant and the defendant may be neutral, but a sudden breakdown of a relationship may in general indicate that the complaint is true. Or in turn those intuitions may prove to be false. What do the scientific studies show?

There is no reference in M(CA23/2009) to statistical data on the significance of types of behaviour to the truth or falsity of complaints. But at least we can say that logically it is necessary to compare the occurrence of the behaviour in the cases of true complaints, to its occurrence in the cases of false complaints.

The jury must not be left in the impossible position of having to use their collective common sense while at the same time treating as neutral behaviour that may well be useful in assessing credibility. How can a jury decide the significance of such behaviour in the particular case without putting it in a more general context?

Sunday, May 15, 2011

Compensation for wrongful convictions

When should a person whose conviction has been quashed receive compensation? This question of entitlement is different from the question of quantum of compensation. Although it is arguable that the two questions should be considered together, they were not in Adams, R (on the application of) v Secretary of State for Justice [2011] UKSC 18 (11 May 2011).

Two poles are identifiable: one is that people who are actually innocent should receive compensation after erroneous conviction, and the other is that no one who is actually guilty should receive compensation after erroneous conviction. By "erroneous" conviction I mean not in accordance with the law.

The problem is to navigate between these poles when interpreting the criteria for compensation. In this case it was the interpretation of s 133 of the Criminal Justice Act 1988[UK] that governed the issue, in particular the phrase "a new or newly discovered fact shows beyond reasonable doubt that there has been a miscarriage of justice". The Court split 5-4 on what this should mean.

The dissenters were particularly revolted by the thought that a person who was in fact guilty might receive compensation after erroneous conviction. Lord Brown (with whom Lord Rodger agreed without delivering a separate judgment) said at [281]:

"Why should the state not have a scheme which compensates only the comparatively few who plainly can demonstrate their innocence – and, as I have shown, compensate them generously – rather than a larger number who may or may not be innocent?"
The minority would accept that some people who really were innocent should be denied compensation in the interests of avoiding giving compensation to the actually guilty. Other minority judges were Lord Judge and Lord Walker.

Lady Hale succinctly addressed Lord Brown's "palpable sense of outrage" [116]:

"Innocence as such is not a concept known to our criminal justice system. We distinguish between the guilty and the not guilty. A person is only guilty if the state can prove his guilt beyond reasonable doubt. This is, as Viscount Sankey LC so famously put it in Woolmington v Director of Public Prosecutions [1935] AC 462, at p 481, the "golden thread" which is always to be seen "throughout the web of the English criminal law". Only then is the state entitled to punish him. Otherwise he is not guilty, irrespective of whether he is in fact innocent. If it can be conclusively shown that the state was not entitled to punish a person, it seems to me that he should be entitled to compensation for having been punished. He does not have to prove his innocence at his trial and it seems wrong in principle that he should be required to prove his innocence now."
She agreed (as did Lords Hope, Kerr, and Clarke) with the test formulated by Lord Phillips at [55]:

"A new fact will show that a miscarriage of justice has occurred when it so undermines the evidence against the defendant that no conviction could possibly be based upon it."
The person does not have to show his innocence beyond reasonable doubt.

Under this test there will be occasions where people who are in fact guilty are entitled to compensation. Such cases may occur where, as Lord Brown mentioned at [280] a person against whom there is inadmissible intercept evidence that unequivocally demonstrates his guilt, could not on admissible evidence be convicted.

The answer to that difficulty is that compensation in such cases should be derisory only. An award of contemptuously small compensation would show society that the person was in fact guilty, and it would deter such people from seeking compensation.

It should be stressed that this case does not establish a meaning for "miscarriage of justice" beyond its specific statutory context. As Lord Phillips observed at [9], this phrase is capable of having a number of different meanings.

Although there are 284 paragraphs in the case, it is easy to read because the judgments are divided into consistent headings, and the dissenters are left to the end under their own heading. Other topics dealt with are the meaning in this context of the phrase "a new or newly discovered fact" and the relationship between the presumption of innocence and a claim for compensation.

In New Zealand this sort of compensation is governed by Cabinet Guidelines introduced in 1998. Claimants have to be alive at the time of the application, have served all or part of a term of imprisonment, had their convictions quashed on appeal without an order for retrial (or have received a free pardon), and must be able to prove on the balance of probabilities that they are innocent of the crime for which they were convicted. This is a more restrictive entitlement than in the UK. There is, however, a "residual discretion" that allows the Crown to consider claims falling outside the guidelines in "extraordinary circumstances" where it is in the interests of justice to do so. So, where a person is acquitted following a retrial he is outside the guidelines, so he must show "extraordinary circumstances" to demonstrate that it is in the interests of justice to award him compensation. This may well mean that if such a person is able to show to a standard higher than the balance of probabilities that he is in fact innocent, it would be in the interests of justice to award him compensation. The guidelines are not, therefore, unduly concerned with failure to compensate people who are really innocent, and they are arguably over-concerned with avoiding compensating people who are really guilty. Some flexibility in the quanta of awards could be a way of making the scheme more just.

The New Zealand Law Commission had recommended the requirement of proof of innocence and para 127 of its 1998 Report No 49 "Compensating the Wrongly Convicted" received citation in Adams, R (on the application of) v Secretary of State for Justice: [47] Lord Phillips, [173, 175] Lord Kerr. The Commission proceeded on the basis that actual innocence is the justification for compensation, but the majority of the United Kingdom Supreme Court held that excluding from entitlement people who no longer seemed to be guilty but whose innocence could not be established was a heavy price to pay for ensuring that no guilty person ever gets compensation (Lord Phillips at [50]).

The NZLC Report starts with a controversial assertion, saying in para 1 "The essence of a free society is the freedom of a law-abiding citizen to act without interference by the state." That begs the very question the state has been unable to answer lawfully. In view of the Report's conclusions, it is a tyrant's assertion, requiring the citizen to prove he is law-abiding. Instead, the essence of a free society is the freedom of all people, whether law-abiding or not, to act without unlawful interference by the state. The rule of law requires the state to prove that interference with the citizen's liberty is justified. The United Kingdom Supreme Court's majority approach survives the moral analysis advocated by Dworkin (see my review of "Justice for Hedgehogs" 25 April 2011), whereas the New Zealand one does not.

Wednesday, May 11, 2011

To put or not to put?

I suppose the most general lesson that can be learnt from the fact-specific decision of the High Court of Australia in Braysich v R [2011] HCA 14 (11 May 2011) is that rulings on whether there is sufficient evidence, at the conclusion of the case for the defence, for a defence to be put to the jury should not be based on narrow assumptions about how the evidence in the case is to be analysed.

Again, in the most general of terms, where it is an offence to do X but there is a statutory defence of absence of intention to do Y, and where the defendant has denied doing X, evidence about X might also be relevant to Y.

So, where a sharebroker facilitates the transfer of legal ownership of shares, when in fact the beneficial ownership does not change, he is deemed to have committed the offence of creating a false appearance of active trading in those shares, but he has a defence if he proves he did not have the purpose of creating that appearance (see para [5-8] of Braysich for the relevant legislation). The circumstances in which he transferred the shares may be relevant to whether he had the proscribed purpose. When he denies knowing that the beneficial ownership did not change, evidence of his good character will be relevant to that, and it will also be relevant to whether he had the proscribed purpose.

Obvious though this may be in retrospect, the Court split 3-2 on whether the defence case was sufficient to raise the defence of absence of the proscribed purpose. Heydon J agreed with Bell J and added [54] that all the defendant had done at trial was to point to evidence which, although not inconsistent with the absence of purpose did not actually support absence of purpose. Bell J [116] considered that there was no evidence of any purpose other than the impugned purpose. Although the defendant had acted for fees for valued clients, that could not, without more, establish that it was probable that he did not have that purpose. The majority, French CJ, Crennan and Kiefel JJ, held that on the view most favourable to the defendant the jury could well have asked whether it was really likely that an honest man who is acting on instructions from reputable people, who he has no reason to believe have a dishonest purpose, would himself have that dishonest purpose when he is aware of the business rules and the law [47], and that therefore the defence should have been put to the jury.

There was no disagreement about what the law is on whether a defence should be put to the jury. The relevant question in this case was [36]:

"In a case in which both the legal burden and the evidential burden rest upon the accused – is there evidence which, taken at its highest in favour of the accused, could lead a reasonable jury, properly instructed, to conclude on the balance of probabilities that the defence had been established?"

Why the big difference between the majority and the minority? I suspect the minority have taken the stance that unless an individual item of evidence gives rise to a probability of innocence greater than 0.5, it does not support the defence. This approach allows the minority to say that evidence that is merely consistent with absence of purpose does not support absence of purpose. The correct way to look at this, as Bayesian logicians tell us, is to ask what is the probability of getting the evidence, assuming the defendant is innocent, compared to the probability of getting it, assuming that he is guilty. Comparison of those probabilities, assessed intuitively, would indicate that each of the items of evidence relied on by the defendant was more likely to exist if he was innocent than if he was guilty, so they individually and in combination support the defence.


Friday, May 06, 2011

Offensive or disorderly behaviour

"Offensive or disorderly" behaviour in terms of s 4(1)(a) of the Summary Offences Act 1981 are

"two sides of the same coin, both directed at the preservation of public order. On this view, "offensive" behaviour is behaviour productive of disorder. It is not sufficient that others present are offended if public order is not disrupted. On the other hand, it is not necessary that the conduct be violent or likely to lead to violence since behaviour with that effect constitutes the more serious offence described by s 3 of the Summary Offences Act. The behaviour must however be such as to interfere with use of public space by any member of the public, as through intimidation, bullying, or the creation of alarm or unease at a level that inhibits recourse to the place."
Per Elias CJ in Morse v Police [2011] NZSC 45 (6 May 2011) at [2] and [33]. The other members of the Court agreed: Blanchard J at [62-65] (offensive behaviour may produce actual disorder or it may indirectly affect public order by wounding the feelings of or arousing anger resentment or disgust or outrage in a reasonable person who takes a balanced rights-sensitive view tolerant of the rights of the defendant); Tipping J at [69-71] (although ordinary notions of causing offence must be relevant so that those affected are substantially inhibited in carrying out the purpose of their presence at the place where the impugned behaviour occurred); McGrath J at [102-103,117] (ordinary notions of causing offence are relevant, but the interference must be beyond what a democratic society is expected to tolerate, it must be a serious interference with the standards reflected in community expectations); Anderson J at [124] (the legislation is concerned with public circumstances of more significance than discourtesy or private upset).



So that's the behaviour and the person it must affect. I don't agree with the Court's media release which states that Elias CJ dissented, perhaps with Anderson J, on the description of the impugned behaviour. One must not read a case as if it were a statute, and here the required minimum for liability is the ratio. Differences in diction should not distract from the core of agreement. Tipping J expresses his disagreement with Elias CJ at [69], stressing at [70] that conduct is not offensive just because someone who is unduly sensitive to it reacts in a way that threatens public order. But Elias CJ would not have used the standard of the reaction of anyone, instead at [40] she requires tolerance of expressive behaviour by people using public places, and holds that a disproportionate reaction would make a conviction substantively unreasonable. In short, although Elias CJ is concerned to avoid subjective things like mere annoyance without disorder counting as offensive behaviour [30-31], her definition of public disorder, quoted above, includes "the creation of alarm or unease at a level that inhibits recourse to the place" which, if you accept than an annoyed person may well wish not to have been there to see the offensive behaviour, is not significantly different from applying the standard of the tolerance of the reasonable person who is conscious of the defendant's rights. If there is a difference between the judges, it is superficial and hardly warrants being called a dissent.

The next matter is how to apply the criteria for the behaviour and the person it must affect to the facts of the case.

In Brooker v Police [2007] NZSC 30 (discussed here on 4 May 2007) there was a difference between the judges on whether a rights limitation or a rights balancing approach to this was appropriate, and the same difference is echoed by two of the judges in Morse. Elias CJ at [13-16] considered that the criminal law and limitations on rights must be capable of ascertainment in advance, and that balancing would be contrary to the need to give the legislation a meaning consistent with rights if it can (citing s 6 New Zealand Bill of Rights Act 1990), and that the first responsibility of the courts is interpretive. Her point is that the legislature carried out the only necessary balancing when it formulated the offence to require an impact on public order. McGrath J, on the other hand, held that balancing is appropriate when applying the criteria to the facts, so it must be carried out in the circumstances of each case [106-107]. A different metaphor, the reaching of a threshold of interference with the rights of members of the public, was used, expressly or impliedly, by Blanchard J at [64],Tipping J at [71], Anderson J at [127]. Elias CJ also favoured an objective standard for whether the defendant's conduct was disruptive of public order [39]. This is a direct application of the threshold requirement to the facts without engaging in an exercise of rights limitation or balancing.


The rights limiting model uses s 5 of the Bill of Rights to find the point at which a limitation on rights is justified, although it can be a matter of dispute as to whose right, the defendant or the victim, should be subject to justified limitation. The balancing model involves judicial weighing of the values that underlie the competing rights. McGrath and Thomas JJ did this in Brooker, but in Morse McGrath J combined balancing with the question of justified limitation under s 5. The threshold model is the preferred method for applying the criteria to the facts, in which the standard is what should be tolerated by the reasonable person who respects the defendant's competing right.

The case itself had been treated erroneously by the lower courts because they had overlooked the requirement that to be offensive or disorderly in this legislative context the defendant's behaviour needed to have a bearing on public order. Had that not been overlooked, the defended hearing would most likely have taken a different course. In view of the history of the case, and the fact that the offence was punishable only by a fine, the Court quashed the conviction and did not order a rehearing.

Morse does not address the mental elements of the offence, and we are not told whether the judges would have decided that the relevant conduct (the defendant, in protest at this country's military involvements, burnt a New Zealand flag within view of people who were participating in a war remembrance service to mark ANZAC day) was offensive or disorderly. There seems to be no doubt that it was capable in this sense, but there was insufficient evidence about whether it actually had the necessary impact on public order (Elias CJ at [57], Blanchard J at [59], Tipping J at [73], McGrath J at [119] and Anderson J at [129-130]).


This was a hollow victory for the appellant, as Morse takes rights disputes out of this part of the law and returns the discussion to the familiar territory of reasonableness.

Wednesday, May 04, 2011

Sorry, I can’t think of a heading for this one ...

Pfennig v R (1995) 182 CLR 461; [1995] HCA 7 is rather restrictive on the admissibility of similar fact evidence. (See my discussion of this case in the entry for 26 April 2008.) Legislation may well take a different stance, as is illustrated by Roach v R [2011] HCA 12 (4 May 2011). A statute providing that relevant evidence is admissible unless it would be unfair to admit it (ss 130 and 132B of the Evidence Act 1977 (Q)) establishes a fairness discretion. The Pfennig rule does not require a balancing of the relevant considerations of probative value and prejudicial effect that is inherent in the fairness discretion, and it cannot be imported into the exercise of that discretion. As Heydon J noted at [64]:

"... The Pfennig test is very favourable to the interests of the accused and very restrictive of the prosecution's capacity to use similar fact evidence. In principle, many may think those to be attractive consequences of the test, but, as already noted, many legislatures, including the Queensland legislature, have not thought so. A construction of s 130 which would incorporate the Pfennig test when the court considers exercising its powers preserved by s 130 would be bringing in at the second stage of an admissibility inquiry a strict rule which the legislature had been concerned to exclude at the first stage by force of s 132B... ."
A couple of interesting points were considered in another case today: SKA v R[2011] HCA 13 (4 May 2011). When an appeal is on the grounds that the verdict was unreasonable, should the appellate court look at a video recording of the complainant's evidence? Should the appellate court have regard to the trial judge's report that stated he thought the verdict was wrong? The High Court was unanimous on those points: there would need to be special reasons for the appellate court to watch the video, as doing so could give undue emphasis to only part of the evidence in the case. If a full written record of the evidence is available it should usually be sufficient for appeal purposes. And the trial judge's opinion was normally irrelevant, it being for the appellate court to make its own assessment of the evidence. Here the majority of the High Court (French CJ, Gummow and Kiefel JJ) held that the lower appellate court had not carried out its function correctly, because it had not made its own independent assessment of the evidence; instead, it had simply asked whether there was, as a question of law, evidence to support the verdicts. No reason had been shown why the appellate court should view the recording, and there was no reason to treat the trial judge's opinion of the verdicts as being of assistance. Crennan J referred at [119] to Sloan [2001] NSWCCA 421; (2001) 126 A Crim R 188 on when a report from the trial judge might be appropriate:

"An important function of a report ... is to inform the Court of Criminal Appeal of any problems which might have emerged during the trial, which either do not appear on the face of the record, or which are imperfectly or ambiguously recorded.
"Another permissible and relevant function of such a report is its use, by a trial judge, to raise any matters of irregularity or otherwise, which may give cause for significant doubt in relation to a guilty verdict, and which again are not apparent upon a bare reading of the record.
" A third permissible reason for such a report is its provision, in response to a specific request from the Court of Criminal Appeal, in relation to any matter which may be of concern to it.
"Otherwise, in times where there is in existence an adequate system for court reporting, occasion for the provision of a ... report should only arise in exceptional circumstances. Its use in order to justify, or to explain a decision for which reasons should have been provided, is not such a circumstance."



For other approaches to how an appellate court should decide whether a verdict was unreasonable, see my discussion of Owen v R [2007] NZSC 102, noted here on 11 December 2007. In New Zealand we have an odd situation: if an appeal is brought on the grounds that the verdict was unreasonable, the appellate court will not reach its own decision on guilt or innocence, whereas if the appeal is brought on a ground which attracts the operation of the proviso, the appellate court will decide the question of guilt or innocence for itself. This is because of a relatively recent change in the interpretation of the legislation in which our Supreme Court blipped over to follow the High Court of Australia's decision in Weiss.

Monday, April 25, 2011

Book Review: Justice for Hedgehogs by Ronald Dworkin

Even lawyers who are not interested in ethics and morals should be fascinated by the brilliant book Justice for Hedgehogs (2011) by Ronald Dworkin.

His treatment of parliamentary sovereignty points the way for twenty-first century policy in the light of law as an interpretive concept. This contrasts to Lord Neuberger MR's recent conservative treatment of sovereignty which may leave us wondering why history stopped after the civil war, the Glorious Revolution of 1688, the Bill of Rights 1689, and the Act of Settlement 1701. Has nothing happened since? Wasn't there a Holocaust? Do people not need protection against abuses by majorities? What if Parliament abolished judicial review or the ordinary role of the courts? Neuberger refuses to test the need for change against hard cases, saying that such arguments are unreal, [1] they involve "postulating a wholly different Parliament from that which we have ever known" and – I sarcastically interpose - everyone in Northern Ireland would cheer to that, but he adds "and, if that arose, there would presumably be a very different judiciary from that which we have ever known." Amazingly, he continues "Further, a Parliament which was prepared to prevent citizens having access to the courts would presumably be unconcerned about the rule of law, in which case questions of constitutional sovereignty would be of no real significance in practice." Well, no, not if the judges sat on their hands. The issue would have to be fought out in the streets.

For those who dislike the idea of revolution as the only answer to a moral crisis of that magnitude, Dworkin's argument is compelling. His thinking has developed since (brace yourself, I'm going to use the cliché seminal) his seminal "Taking Rights Seriously" (1977). He now sees law as a branch of politics, rather than as a system separate from but interacting with morality. The change is because Dworkin has recognised the circularity of treating law and morality as separate but interrelated systems. How would they interrelate? If that is a legal question, the answer depends on an assumption about the role of morality in reading legal material; the alternative is to assume it is a moral question. This logical difficulty, says Dworkin, is what led to the "concept of law" jurisprudence, which treated the relationship between law and morality as neither a legal nor a moral question, but as a "conceptual" one. Here the problem is that people don't agree on which propositions of law are true. That, however, is unavoidable, and Dworkin looks to an integrated network of political value to construct a conception of law. Ethics produces personal morality which produces, as a subdivision, political morality which produces, as a subdivision, law. There may be, therefore, some valid laws that are too unjust to enforce.

But I have focused here on his final chapter, while on the way Dworkin has discussed a huge range of fascinating ethical and moral questions. His aim is to demonstrate how we can coherently think about questions of values. The integration of our understanding of interpretive concepts produces a unity of values. Interpretive concepts are those about which we share a general understanding, but we may disagree about their application in particular cases. Justice, right or wrong, helping, harming, keeping promises, obligations arising from relationships, equality, liberty, democracy, and law are all interpretive. The truth of an interpretation is determined by its consistency with the two principles of dignity. The first principle of dignity is that the success of one's own life has objective importance, and, as a corollary, all lives are equally important. The second principle of dignity is that we each have personal responsibility for our own life; we must each make our own decisions and so lead authentic lives. Self-respect comes from taking our own life seriously and in that sense living well: we must strive to make our own life a successful performance by creating value in it. The two principles of dignity interact to guide ethics (how to live well) and morality (how to treat others), which in turn are mutually reinforcing: living well requires treating others well, and respect for others enhances self-respect.

That is an outline of the skeleton of Dworkin's conception of the unity of value. There have been times when, as a lawyer, I have wished that the people who write complicated statutes would reveal the whiteboard diagram which they devised to guide their drafting. So too with this book. It has to be worked at rather than skim-read. Notes have to be scribbled in margins and end pages filled with references. Yes, the first chapter serves as a travel guide to the journey ahead, but there are times when Part One (Chapters 2 to 5) slows down while Dworkin deals with anticipated challenges from academic philosophers, requiring detailed conceptual distinctions on issues that most of us, since we have bought the book, will be prepared to take on trust just for the sake of getting to his point. But it would be wrong to be discouraged by the initial labours, as once we have appreciated the book as a whole we can go back to the details. Some readers might think a glossary would have been useful, but the index is a well designed work-around.


For an indication of what you will find in Justice for Hedgehogs, here is Dworkin's essay from a recent issue of the New York Review of Books (10 February, 2011).

This wonderful book will delight anyone who wants a systematic approach to deciding what is right. It would be a dull person indeed who did not feel the resonance of Dworkin's conclusion:

"Without dignity our lives are only blinks of duration. But if we manage to lead a good life well, we create something more. We write a subscript to our mortality. We make our lives tiny diamonds in the cosmic sands."


[Update] For a critique of Dworkin’s early work on rights and principles, see Roger Scruton, Fools, Frauds and Firebrands – Thinkers of the New Left (2015), Chapter 3. Of Dworkin’s style of argument, he says:

 “ … While purporting to give a general theory of law, Dworkin’s real interest is one of advocacy, on behalf of a political position towards which, in the conservative view of things, the law is at most neutral, and in some respects deeply opposed.” 

 “… he assumed that it was never he but always his opponent who bore the onus of proof. For Dworkin, as for the writers for the New York Review of Books generally, the left-liberal position was so obviously right that it was for the conservative to refute it.”

 “… For a conservative it is a matter of common sense that constant liberalization, constant remaking of law in the image of the elite lifestyles of New York, may eventually threaten the community with harm.”

 In contrast to Dworkin’s principles, Scruton places the common law:

 “…the knowledge that we need in the unforeseeable circumstances of human life … is bequeathed to us by customs, institutions and habits of thought that have shaped themselves over generations, through the trials and errors of people many of whom have perished in the course of acquiring it. Such is the knowledge contained in the common law, which is a social bequest that could never be adequately replaced by a doctrine, a plan or a constitution, however entrenched that constitution may be in a vision of individual rights. … The common law is concerned to do justice in the individual case, not to pursue some far-reaching reform of the manners, morals and customs of the community as a whole.”

 Whereas Dworkin sees law as emerging from a political morality that is part of personal morality which in turn is a product of ethics, Scruton’s view is more recognisable:

 “…the common law of the English-speaking people … [has] been in existence for a thousand years, with precedents from the twelfth century still authoritative in our twenty-first-century courts. It has developed according to an internal logic of its own, maintaining continuity in the midst of change and welding English society together through all national and international emergencies. It has shown itself to be the motor of history and the initiator of economic change ….” 


The opposing camps – conservatives and new leftists (to follow the terminology of Scruton’s title) – have set up conceptual frameworks for working out their positions on issues. Are the positions fixed for all time? I doubt that conservatives now oppose women having the vote. If agreement can come with time, are values relative to social conditions? Not all conservatives would, I surmise, now side with Devlin against Hart on the issue of the lawfulness of homosexual practices, although many might. Some conservatives may accept laws for abortion procedures, just as some new leftists may be against them. The methods for working out positions on contentious issues do not dictate answers. Dworkin may only support legalisation of homosexual practices because of the weights he gives to the values he recognises, and Scruton may take the opposite view because of his individualised weightings. A person may be conservative in some ways and new leftist in others. Answers to social issues are individualised, even where people approach them in the same way. A vote count, or a dictator, may determine the course society will take.

What to make of all this arguing

Can a government be forced to avoid making immoral laws? Who is to say what is moral? 

 

One way of settling this is by warfare. In the immediate aftermath of the Second World War the trials at Nuremburg imposed penalties on leaders who had acted according to the laws of the defeated government.

 

As a preferred alternative to warfare, is there a way, internal to the legal system under which it exists, of constraining the acts of a government?

 

To some extent, if there is a written constitution, government powers can be constrained, but only if the courts have the power to declare infringing legislation and governmental actions invalid.

 

Dworkin’s task was to find a way of extending the courts’ powers to hold immoral laws and governmental actions invalid.

 

The obstacle he faced, voiced by so-called conservatives, is the interpretation of history that recognises parliament as sovereign. This means that enacted laws are valid. There is no reasoning with such a position, because it takes sovereignty to be axiomatic.

 

Equally stubborn is Dworkin’s stance: laws are only valid if they are both properly enacted and morally right.

 

The difficulty with axioms is in proving that they are correct. You don’t have to be Gödel to realise that some things just can’t be proved using the methods of argument accepted within a system. Hence, warfare.

 

Dworkin can only attempt to persuade us that he is right. Many of his examples used to illustrate the unattractiveness of his opponents’ positions are appeals to emotion. But, the conservatives may say, just because an outcome is unattractive doesn’t mean it is illegal.

 

At its highest, Dworkin’s argument is that law and morality are not separate things. They are interpretive concepts.

 

Why, then, are people ordinarily punished for disobeying laws that they think are wrong? When does the majority view, expressed through the government, of what is a just law, become subject to the views of a small group, such as judges?

 

International laws try to provide an answer, through conventions and declarations. If governments accept these by ratification, they acknowledge that the final interpretation of their laws may be decided by international courts. But governments may refuse to ratify these conventions and declarations, or may “exit” from their jurisdiction.

 

The effort to get governments to do what they don’t want to do really comes down to political pressure, economic sanctions, and if all else fails, the horrifying disaster of warfare.


_____________________________


[1] Looking back on this from the future, it can be accepted that refusing to address difficult hypotheticals is not a wise tactic. The Supreme Court in Miller v Prime Minister [2019] UKSC 41 at [43] said that it was no answer to the points before it that the court should decline to consider extreme hypothetical examples.

Friday, April 08, 2011

Interpretation of unfettered powers


The granting by the legislature of unfettered powers on a court does not destroy all lawful restraint. In Lacey v Attorney-General of Queensland [2011] HCA 10 (7 April 2011) the High Court considered statutory interpretation, legislative purpose, jurisdiction, power, and the kinds of appeals that can exist.

The majority, French CJ, Gummow,Hayne, Crennan, Kiefel and Bell JJ, held that a provision saying an appellate court "may in its unfettered discretion vary the sentence and impose such sentence as to the Court seems proper" means that the appellate court must first be able to identify an error in the decision of the court below, and then the "unfettered discretion" gives the appellate court the power to do what it considers the lower court should have done [62].

The principle of legality is "the presumption that, in the absence of unmistakable and unambiguous language, the legislature has not intended to interfere with basic rights, freedoms or immunities" [43], and "judicial findings as to legislative intention are an expression of the constitutional relationship between the arms of government with respect to the making, interpretation and application of laws" [ibid].

The distinction between a power and the jurisdiction to exercise it is such that "The power given to the Court may inform the characterisation of its jurisdiction but does not necessarily define its content" [48].

Here the jurisdiction was indicated by the heading to the relevant provision, here simply the word "appeal". This encompasses the jurisdiction, and the question is, what kind of jurisdiction does it create? [56].

The majority set out the relevant classes of appeal for present purposes [57] (footnotes omitted):

"1. Appeal in the strict sense – in which the court has jurisdiction to determine whether the decision under appeal was or was not erroneous on the evidence and the law as it stood when the original decision was given. Unless the matter is remitted for rehearing, a court hearing an appeal in the strict sense can only give the decision which should have been given at first instance.
2. Appeal de novo – where the court hears the matter afresh, may hear it on fresh material and may overturn the decision appealed from regardless of error.
3. Appeal by way of rehearing – where the court conducts a rehearing on the materials before the primary judge in which it is authorised to determine whether the order that is the subject of the appeal is the result of some legal, factual or discretionary error. In some cases in an appeal by way of rehearing there will be a power to receive additional evidence. In some cases there will be a statutory indication that the powers may be exercised whether or not there was error at first instance."
Here the appeal was of the third kind [60] where the jurisdiction arose once the appellate court determined that an error had occurred in the court below.

Heydon J dissented, holding that the appellate court had first to decide whether it disagreed with the sentence imposed by the lower court to the extent that interference was merited, and if it did, then to vary the sentence in accordance with its perception of what was appropriate [94].

So the difference here was in practical terms about which sort of appeal was created by the legislation, and this difference was reflected in different use of legislative materials (here, speeches in Parliament). The majority noted [61] (footnote omitted):

"The Minister's words ... cannot be substituted for the text of the law, particularly where the Minister's intention, not expressed in the law, affects the liberty of the subject. In any event the Minister's Speech left open the question of the content to be given to the word "appeal" and thereby to the jurisdiction conferred upon the Court."

The last thing I want to do is to reveal my unsubtle mind, but I must be frank and admit I find the distinction between the first and third classes of appeal as described by the majority rather elusive, apart from the possible add-ons in the third. This, I trust, is the judges' fault, not mine. More clarity in future please.

Thursday, April 07, 2011

Dangerous hypotheticals

One of the common judicial rear-protecting stratagems is to reason in the form "even if I'm wrong, I'm right."

That is, a decision on the basis of particular assumptions would be the same if those assumptions were wrong.

For example, if evidence is ruled admissible on the basis that there was no impropriety in the way it was obtained, a judge may say that even if the alleged impropriety had existed the evidence would still have been excluded.

I criticised that sort of reasoning a while ago: "Shaheed balancing: three propositions" [2004] New Zealand Law Journal 475. So did the Chief Justice last month, when with Blanchard, Tipping and McGrath JJ she delivered the reasons for granting leave to appeal in Hamed v R [2011] NZSC 27 (24 March 2011) at [15]:


"[15] Although the Court of Appeal indicated its view, in application of s 30 of the Evidence Act, that all the evidence should be admitted even if unlawfully obtained or obtained in breach of s 21 of the New Zealand Bill of Rights Act, we have some doubts as to whether it was in a position to express a view on the proportionality of exclusion. An assessment of this kind requires the gravity of the infringement to be carefully balanced against the benefits of admission of the evidence. Since the Court of Appeal took the view that there was no infringement, it was an unnecessary and perhaps artificial exercise for it to undertake the s 30 assessment in respect of the evidence it considered to have been lawfully obtained under s 198 warrants."
The misuse of hypotheticals is quite common. The Supreme Court did it itself in a passage that I have only now noticed: in Condon v R[2006] NZSC 62, an important decision on the status of the right to a fair trial, noted here in August 2006. In its penultimate paragraph the Court says [89]:


"After considering all of these matters, we have not been persuaded that the outcome of the trial would necessarily have been the same if Mr Condon had been legally represented. In our view there was therefore unfairness in the trial and accordingly a substantial miscarriage of justice has occurred."
The trouble here is that the result if there had been no error (ie if legal representation had been obtained), that is, if the trial had been fair, is irrelevant to the question of whether the trial had been fair. If the trial was unfair the conviction had to be quashed, regardless of the strength of the prosecution evidence. If an error at trial caused a real risk that the jury would not be impartial, that would render the trial unfair. A partial jury could nevertheless reach a correct verdict, but it would still be a partial jury delivering a verdict at an unfair trial.

On this point the Court had reasoned better in Sungsuwan v R [2005] NZSC 57, which was noted here in August 2005, and I observed that the majority of the Privy Council in Howse v R (New Zealand) [2005] UKPC 31 had fallaciously asked what course the trial would have taken if the relevant errors had not occurred. The way to avoid this artificial exercise is to ask, given that the errors occurred, what was their effect on the fairness of the trial.

In Sungsuwan the effect of the error on the verdict was a sufficient, but not a necessary, condition for a finding that the trial was unfair. It is one of the ways in which unfairness may be manifest. Another is where partiality existed although the verdict was inevitable. The sufficient condition should not be treated as if it was a necessary condition, as occurred in Matenga v R [2009] NZSC 18 at [31] footnote 39 where the Court defined a substantial miscarriage of justice as one which affects the result of the trial.

Thursday, March 31, 2011

Abuse of process, stay of proceedings, and integrity

The inherent power of a court to stay criminal proceedings on grounds of abuse of process is a discretionary matter, not to be fettered by rigid classifications of kinds of official misconduct: Warren v Attorney General of the Bailiwick of Jersey (Court of Appeal of Jersey) [2011] UKPC 10 (28 March 2011).

There are, said Lord Dyson delivering the leading judgment, two categories of case in which a stay may be justified: (i) where a fair trial could not be held; (ii) where continuing the proceedings would offend the court's sense of justice and propriety [22, quoting R v Maxwell [2010] UKSC 48 at 13, a decision not yet published].

These should not be confused, and it is unhelpful to refer to fairness when discussing the second category (Lord Kerr at [84]).

The signal here [this is me now, not a Lord] is that what is often referred to as "public policy fairness" should now be called something like "public policy grounds" or "the public policy category".

The circumstances of each case are critical, and the classic cases - R v Looseley [2001] 1 WLR 2060; R v Latif [1996] 1 WLR 104; R v Horseferry Road Magistrates' Court, Ex p Bennett [1994] 1 AC 42 - must be read in this light. Lord Dyson added [26]:


"The Board recognises that, at any rate in abduction and entrapment cases, the court will generally conclude that the balance favours a stay. But rigid classifications are undesirable. It is clear from Latif and Mullen [[2000] QB 520] that the balance must always be struck between the public interest in ensuring that those who are accused of serious crimes should be tried and the competing public interest in ensuring that executive misconduct does not undermine public confidence in the criminal justice system and bring it into disrepute. It is true that in Bennett the need for a balancing exercise was not mentioned, but that is no doubt because the House of Lords considered that the balance obviously came down in favour of a stay on the facts of that case (the kidnapping of a New Zealand citizen to face trial in England)."
Any virtue that might have been thought to attach to Mr Bennett, through giving his name to a leading case on police misconduct, is dispelled in the present case by Lord Hope, who adds at [64-68] a detailed examination of the facts of that case.

Does the emphasis on the facts of each case erode the value of these cases as precedents? Does the balancing exercise leave the law unacceptably vague? On appeal the question will be whether the decision to refuse a stay was perverse or was one which no reasonable judge could have reached [51].

Judgments may tend to pull in two directions: to condemn the misconduct of officials while at the same time holding that a stay was not required. That was the position here. Looking at the misconduct from a (considerable) distance – the placing of audio surveillance equipment in a car without lawful authority and giving the impression that permission had been obtained – this was not a case of serious misconduct. But one would think it was, given the stern protestations of Lord Dyson [45-46], Lord Hope [61-62, 68], Lord Rodger [70-71], Lord Brown [78], and Lord Kerr [81-82]. There were circumstances that mitigated the wrongfulness, summarised by Lord Dyson at [47-50].

The Board found useful the summary of the balancing exercise appropriate to the second category of abuse of process cases (no balancing being appropriate where a trial would not be fair) given by Professor A L-T Choo in Abuse of Process and Judicial Stays of Criminal Proceedings, 2nd ed (2008), at p 132:


"The courts would appear to have left the matter at a general level, requiring a determination to be made in particular cases of whether the continuation of the proceedings would compromise the moral integrity of the criminal justice system to an unacceptable degree. Implicitly at least, this determination involves performing a 'balancing' test that takes into account such factors as the seriousness of any violation of the defendant's (or even a third party's) rights; whether the police have acted in bad faith or maliciously, or with an improper motive; whether the misconduct was committed in circumstances of urgency, emergency or necessity; the availability or otherwise of a direct sanction against the person(s) responsible for the misconduct; and the seriousness of the offence with which the defendant is charged."

Lord Kerr summarised [83] the principles that have emerged from recent jurisprudence. He emphasised that stays are not imposed to discipline the police, but instead are designed to protect the integrity of the criminal justice system.

The decision in this case may have been finely poised, but it is not surprising: given the extenuating circumstances and the relatively slight (compared to being kidnapped or entrapped) breach of the defendant's rights, and the fact that the offending was importation of cannabis (180 kg, worth over £1m), it is not unreasonable to conclude that the integrity of the justice system did not require a stay of proceedings.



No one likes to disagree with the Privy Council, but I have to doubt whether it is appropriate to address the need for a stay of proceedings as a balancing exercise. Either misconduct is sufficiently egregious to require a stay, or it is not. The balancing factors mentioned in this case are essentially those applicable to the discretion to exclude improperly obtained evidence. The balance is between factors relevant to the seriousness of the impropriety and factors relevant to the seriousness of the alleged offending. This similarity in reasoning raises the question of the relationship between exclusion and the stay of proceedings.

The stay is clearly the more extreme response, and factors justifying it can be put at the end of an imaginary continuum of impropriety, most of which could be a basis for exclusion of evidence unless the offending is too serious. The seriousness of the offence is properly part of the balancing exercise used to determine the admissibility of improperly obtained evidence. But when the level of impropriety is sufficiently high to take the potential remedy beyond exclusion of evidence to a stay of proceedings, is there a level of offending that would make a stay inappropriate? If there were, it would also have to make exclusion of the improperly obtained evidence inappropriate, otherwise where that evidence was central to the prosecution case the proceedings would terminate. Once evidence is ruled admissible after the balancing exercise, because the alleged offending outweighed the impropriety, an application for a stay would be futile. If, on the other hand, the evidence was excluded because the impropriety outweighed the seriousness of the offending, an application for a stay might in extreme cases be successful and if so, that would be because of the seriousness of the impropriety. 

There would be some cases where the impropriety, although sufficient to require exclusion of the improperly obtained evidence, was insufficiently serious to warrant the response of a stay. That would be because of the nature of the impropriety, not because of the seriousness of the alleged offending. But where the impropriety was sufficiently serious to justify a stay, it would be sufficient for that purpose no matter how serious the offending. The assessment of the seriousness of the impropriety would be an exercise of judgment, taking into account matters relevant to the impropriety. The judgment would be about whether in those circumstances a stay was necessary to uphold public confidence in the integrity of the judicial process. It would be wrong to say that a prosecution should proceed (because of the seriousness of the alleged offending) even though proceeding would compromise the integrity of the judicial process.

For a glance into the future, see Wilson v R [2015] NZSC 189 (14 December 2015), where the Court described the decision as to whether a stay was warranted in circumstances of investigatory impropriety as a balancing exercise, where the seriousness of the impropriety was balanced against the need to uphold public confidence in the integrity of the judicial process (at [60], Elias CJ dissenting on this point at [149]). I side with the Chief Justice on this.

The stay of proceedings can be used in wider contexts than improperly obtained evidence, and in those the seriousness of the alleged offending may well be a relevant factor. Delay, multiplicity of charges, re-litigation of decided issues, improper motive in charging or prosecutorial reneging on an agreement as to charge can all give rise to issues of the appropriateness of a stay, and the seriousness of the alleged offending could properly be a factor in the decision. 

Disobedient fact-finders

For an interesting article on the adverse effects of a rule (as opposed to a discretion) excluding improperly obtained evidence, and the ways in which fact-finders can be biased by knowledge of excluded evidence or by suspicion that evidence has been excluded, see Tonja Jacobi, "The Law and Economics of the Exclusionary Rule", available at http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1783863

The author cites studies that suggest juries do not obey judicial directions, and even go to the extent of counter-intuitively reasoning that "if I am innocent I may as well commit offences because if tried I would be likely to be convicted even if innocent." We need to know how valid are the studies that are cited in this paper.