> The purpose of confession in the religious sense has nothing to do with the purpose of confession in the judicial sense.
That's completely irrelevant, if both confessions work the same way. And they do. There's no switch in the human brain that says "this is a judicial confession, be the sharpest least emotional being you've ever been". You may hope that the confession in the judicial sense acts as evidence, but when this clearly fails to be the case, over and over, for decades and centuries, creating a truly unknown and uncountable number of false convictions...
Well, then reasonable people don't whine "but they're supposed to be different!". If you can't see this, then I question your right to sit on a jury. You're simply unsafe for the rest of us to allow you to ever be involved in the process. It's very unfortunate that so many people who should rightfully be institutionalized for feeble-mindedness are allowed to do things like wander freely, vote, and use sharp tools.