I wonder about the "psychopathy-sensing special abilities" being "conspiracy territory."

Let's say there were a sub-species of psychopaths.

Let's say, for you to be "evil-beyond-reason" it takes M chromosomes having N genes.

As a psychopath, you probably want to associate yourself with other psychopaths, but maybe not live/work among them, except to breed.

Why would you want to associate yourself? Because if you work in tandem, you can exploit the rest of us with less friction, i.e. make laws. Each psychopath draws their own little kingdom, for them to rule.

Hmm, I guess, if the psychopaths could "feel" that another was "one of them" they may indeed work with one another.

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It is hard for me to think, that given the huge advantage of knowing "your kind" that you wouldn't somehow sense it.

This is crazy talk isn't it. But look at the world. It looks just like this.