Originally Posted by
eschatological
The sad truth is, though, that prosecutors have the ultimate say in whether to pursue a case, and in a liberal place like where I worked (NYC), prosecutors rarely went to trial without thinking the defendant was guilty. I have, for that reason, spent most of my career defending guilty people. You say "Make it work by enforcing innocent until proven guilty" yet testimonial evidence has been sufficient evidence for guilt for over 200 years, because our system is based on trusting people to tell the truth, the whole truth, and nothing but the truth. The burden on the prosecution is to prove guilt beyond a reasonable doubt, but once you say a prosecution witness is lying, and you want to impeach them, the burden shifts to the defense to prove they're lying. The assumption is they're telling the truth because they fear perjuring themselves.