Well, not really. It does add a tinge of bias to assessments of if they're more rational or not. I'm sure what Dahmer was doing seemed perfectly rational in his mind but to the rest of humanity he was far from it.
I'm not saying you're a psychopath, I'm just saying this is a point I personally would consider and weigh up.
I'm not saying you're a psychopath, I'm just saying this is a point I personally would consider and weigh up.