Our very well trained seers (who are always right) tell us that this will reduce murder by 90%.. but 1/20 people we execute will be innocent of the crime.
Do we take the bargain?
Now the question is, what would make one decide to apply whatever answer they give here, but not there? Definitely food for thought!
Reducing 193 murder victims (Belgium 2017) to 19.3 victims. Assuming there's a 1:1 victim/killer ratio, that would mean ~20 executed killers of which 1 is innocent.
So, "accidentally" killing 1 person to save 173 lives.