[sadris]

And how many innocent people were convicted based on false positives?

How many guilty people were convicted based on true positives?

[Jill_the_Pill]

These are not comparable. The first must be zero, and the second should be "as many as possible while keeping the first at zero."

[sadris]

It must be zero? What if that resulted in 50% of murderers getting away?

[DrGrX]

Trying to eliminate false positives at the expense of letting criminals go free is a staple of western criminal law dating back to 1760s. See: https://en.wikipedia.org/wiki/Blackstone%27s_ratio

[RHSeeger]

Convicted isn't the right metric. Accusing someone of some crimes (generally anything sexually related or child related) is enough to ruin their life.