Dubious Motives for Flawed Rules: The Clash between Values

The central purpose of a criminal trial is to decide the factual question of the defendant's guilt or innocence. – U.S. Supreme Court (1986) Rights always trump reliability. – William Pizzi The manifest destiny of evidence law is a progressive lowering of the barriers to truth. – C. McCormick In the previous four chapters, we have seen repeatedly how truth-thwarting rules or procedures have been put in place across a wide spectrum of rules of evidence and procedures. In several cases, I have suggested alternatives to those rules that would be more conducive to finding out the truth about a crime. Now, at the end of this long thought experiment, we have to choose between these genuinely truth-promoting rules and their truth-thwarting counterparts. If epistemic values were the only ones in play, the choice would be a foregone conclusion. But other values – from those focused on the rights of participants in a criminal proceeding to questions of public image and efficiency – do intrude, meaning that difficult choices must be made. If we are to decide between existing rules and some of my proposed alternatives, we have to face squarely the question of how, if at all, conflicts between these different sorts of values can be resolved. It will probably be helpful if, from the outset, we recognize that the sorts of reasons given for the various truth-thwarting rules I have been scrutinizing fall more or less cleanly into five distinct classes: Distributionist concerns, seeking to lower still further the likelihood of a false conviction […]