Excellent link. A particularly noteworthy excerpt:
[Q:] I assume that most people in these jobs aren't actually trying to convict innocent people. So how does such misconduct come about?
[A:] I think what happens is that prosecutors and police think they've got the right guy, and consequently they think it's OK to cut corners or control the game a little bit to make sure he's convicted.
This is the same phenomenon that is responsible for most scientific scandals: people cheat when they think they have the right answer.
It illustrates why proper methods really ought to be sacrosanct even when you're sure.
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