

Based on what I read, the corollary is also true. Just because somebody did time doesn’t mean they did the crime. Cops use all kinds of bullshit tricks to get convictions. It seems like every week it turns out shaken baby syndrome isn’t real, or excited delirium, or voice stress analysis. Shit, I read that barrel signatures aren’t even real. I’m not sure about that one, only having seen it one place, but I’m willing to believe it’s been a con all along that it’s possible to match a fired bullet to the gun that shot it. They cheat that badly.
In the US, at least, the criminal justice system seems to care only about clearing cases, not solving crime. Taking the profit motive away might clean some of this up.

@itsjustachairmary
To add injury to injury, one piece of forensics that actually does work is DNA testing, and yet it’s hardly ever done. Texas was having to exonerate so many convicted rapists they simply burned all the untested rape kits. Bush2 did that when he was governor.