Does it go down for the people committing crimes? Prisons are full of inmates with poor impulse control, and/or who aren't capable of understanding risk. I und

Does it go down for the people committing crimes? Prisons are full of inmates with poor impulse control, and/or who aren't capable of understanding risk. I understand that for the average HN reader the known presence of guns in an area is probably going to move the probability of robbing a stranger from 0.001% to 0.0005% or something, but I'm not convinced the thought process of actual criminals works the same way.