Sunday, May 22, 2016

Presumption of Innocence

The Universal Declaration of Human Rights has it that "everyone charged with a penal offence has the right to be presumed innocent until proved guilty according to law in a public trial at which he has had all the guarantees necessary for his defence." This is a kind of legal protection against criminal conviction—you cannot be declared by the state to be guilty of a crime, or punished for it, unless your guilt has been proven.

The presumption of innocence is rightly considered a pillar of civilised society. But people have a tendency to over-apply it in irrelevant cases. The presumption of your innocence means that the state can't punish you for a crime unless it proves that you committed it. That's it. It has nothing to do with how one individual should treat or think about another, or whether an organisation should develop or continue a relationship with an accused individual. The presumption of innocence doesn't protect you from being unfriended on facebook, or shunned at conferences, or widely thought by other people to be a criminal. It just protects from being criminally convicted.

The weird world of academic philosophy this week is digesting an article that includes serious allegations of sexual harassment by Yale professor Thomas Pogge against philosophy students. While most of the people whose reactions I'm reading are expressing disgust at Pogge's behaviour and gratitude for Fernanda Lopez Aguilar, the woman who has come forward with the story, there are some (including Pogge himself, as well as some of the People who Leave Comments on Blogs) who caution the broader world from jumping to conclusions, on grounds related to the presumption of innocence. Pogge's statement discusses "trial by internet"—but since "the internet" is not contemplating the use of state power against his liberty, whatever metaphorical sense in which he is undergoing a "trial" is not one where he enjoys the presumption of innocence.

The admonition not to pass judgement about the allegations is simply the admonition to ignore them. "Don't believe anything unless it's been proven in a court of law." But this is just a ludicrous epistemic standard. Do you care whether powerful men in academic philosophy are using their stature to coerce students into compromising sexual situations? Then you should be interested in credible testimony to the effect that this one has been. Don't be tempted by the fallacious inference from it hasn't been proven in court to you have no way to tell whether it's true. (This, incidentally, is also why it makes sense for universities to have sexual assault policies.)

Moreover, it's not in general "jumping to conclusions" to accept someone's word. We learn from other people about what happened to them all the time. Talk of courtroom standards of evidence can make us forget the fact, but in general, we can get knowledge from other people. There's a temptation to think "it's just a he-said–she-said situation, so there's no way to know what really happened". While there are of course some cases that are like that, it's not in general true that any time testimony is disputed it can't be known to be true. Sometimes someone tells me something, and I thereby come to know it, even though someone else denies it. This is especially likely when the thing told is generally plausible, and fits well with other things I know, when there's no plausible explanation about why the testifier would say it if it weren't true, and the denial is both weak and self-serving. All these features seem to me to be present in the current case (and in many similar cases).

I believe Aguilar's allegations. They are serious and credible. They cohere with other stories many of us have heard about Pogge. The asinine hypothesis that she'd make them up out of spite, or for some kind of personal benefit, is the risible product of a preposterously misogynistic imagination. I think it'd be an epistemic error not to believe them—and a moral error too. It would be derelict for us as a community to ignore that which it's reasonable for us to believe—indeed, what which I think we know.

Wednesday, May 11, 2016

What is proof beyond a reasonable doubt?

As I finish up a few long-standing projects on knowledge (check out my draft monograph!) I'm hoping to start exploring a few new-for-me areas. In recent years my philosophical discussions on this blog have been relatively esoteric, trying out a new objection to so-and-so's third paper on such-and-such; when I was in grad school I used it as an early thinking-out-loud forum about more basic stuff. If I can swallow my pride enough, I may return to that form over the next several months. One area I'm quite ignorant and naive—but also curious—about is law. In particular, I'm curious about how legal concepts like evidence and testimony interact with epistemological concepts like evidence and testimony. I'm a complete novice in this field, so if I'm overlooking things that seem totally obvious to any readers, I'd be grateful to have it pointed out, especially if it comes along with reading advice.

One of my entry-points into the literature here is my UBC colleague John Woods's book Is Legal Reasoning Rational: An Introduction to the Epistemology of Law. (I'm maybe 40% of the way through a first read of it now.) Here's one thing I've found interesting so far. Woods writes, on p. 103:
Spike cannot be convicted unless a jury unanimously finds that his guilt has been proved beyond a reasonable doubt. Certainty beyond a reasonable doubt is sometimes said to be moral certainty. Under either name, as Gifis writes, it is a conviction based on persuasive reasons and excluding doubts that a contrary conclusion can exist. This is much too strong a formulation. There is plenty of case law that allows for conviction even in the face of a perfectly reasonable case to the contrary, recognized as such by the jury. On an alternative formulation of the standard. A juror is said to be morally certain of a fact when he or she would act in reliance upon its truth in matters of greatest importance to himself or herself. Although better, this appears to omit the essential requirement of criminal proof that this readiness to act, this moral certainty, be grounded in the juror's belief that the burden of criminal proof has been met. In other words, it seems not to be sufficient for criminal conviction that a juror be in a state of moral certainty of the accused's guilt. It also matters how he came to be in that state. 
So we have these notions:

  • Proof beyond a reasonable doubt
  • Certainty beyond a reasonable doubt
  • A juror's being in a state of moral certainty
Woods slides between the first two without comment. Maybe the thought is that there is this tight relationship: proofs establish certainty. (In logic or mathematics, this seems plausible—if I have a proof of something, then it is certain for me.) But as Woods points out, it's another matter whether my psychology reflects this certainty. I might have a proof but doubt anyway; or I might be irrationally certain, even absent a proof.

I wish Woods had explained further what he had in mind when he discusses appropriate conviction in the face of 'a perfectly reasonable case to the contrary'. (I am not sure who Gifis is—I don't see a citation.) Can there be 'perfectly reasonable' cases that have been proven not to be the case? If 'provability beyond a reasonable doubt' is closed under deduction, then it seems like there must be. (If it's been proven beyond a reasonable doubt that Jones committed the crime, then it's provable beyond a reasonable doubt that Jones wasn't framed.)

The alternative formulation mentioned seems to target the psychological state of being in a state of moral certainty. This feels at least analogous, maybe more, to the epistemological notion of belief or commitment. Some epistemologists, like Jennifer Nagel and Brian Weatherson, have emphasized that whether one is in this state depends (causally or constitutively, respectively) on the practical situation—when the stakes are high, one is less likely to believe. Maybe moral certainty is something like, being such that one would count as believing even in very high stakes cases. And although this state isn't, as Woods points out, sufficient for appropriate conviction, a normative connection seems plausible: one should only be in this state if one has a proof of corresponding strength. Don't be sure unless it's proven.

It's hard for me not to think in terms of knowledge. One contextualist way of mapping these thoughts would have it that, given a high standard for knowledge, all and only that which is proven beyond a reasonable doubt is 'known', and jurors should vote to convict if and only if they know the defendant guilty. I think this could make sense of these issues—although it'll probably be too simple in other respects, such as the restriction of admissible evidence. (Some things jurors know, they're not supposed to consider. (Or maybe a weird standard could count them as unknown? Something to think about.))

Anyway, I know I'm being really naive here, but I'd be interested in digging in a little bit, if anyone has ideas or reading suggestions.