Originally Posted by BestXXXPorn

Proven, really? Do you have any real numbers to back this up? I'm interested

I agree with the death penalty in most cases... however if we're talking about homicidal maniacs I think it's worth having psychiatrists and psychologists take a few years with them first to better understand the mind of a killer. The larger sample size we have the more data we have to understand the patterns of these types of killers and be able to track them down easier / identify patterns in new killers, etc...