Thrawn the thing is now we have many new technologies although not full proof but help greatly, greatly proving whether or not a person is guilty,especially if the penalty for such crime is death. Yes many people sentenced to death in the past have been cleared thanks to these technologies and I'm glad for them,there have been mistakes, I kid you not,but there have also been mistakes in trying other crimes but do we do away with the whole court process just because of mistakes? I don't think so.
Now we see the death penalty as unconstitutional,maybe later we'll see jail unconstitutional aswell,why have a criminal law system then? and when will we stop and find ourselves in complete anarchy.