Theres's no slippery slope. You can reverse sending the wrong person to jail. You release them.

> If we kill innocent people that is bad, and we should require an incredibly high bar for this type of thing.

Yeah, the bar should be "only when humans reach infallibility" and then we won't kill any innocent people.

Why would you want a justice system that kills innocent people (and spends more money in the process) when it is entirely avoidable?