I'm going to call fallacy of grey on that. Yes, the human brain is a large mystery. But there's been an awful lot of work done in the field of psychology, and I have a very limited knowledge of psychology, relative to people who work in that field. And some of those people may be on less wrong.
And I'm going to call fallacy of composition on that. Sure, some psychiatric disorders are fairly well understood. Sociopathy/Psycopathy/ASPD, however, are not well understood by anyone.
To the extent that there is a condition, it's that there are a substantial number of people in the world who seem to exhibit similar personalities. Clusters in personality space, so to speak.
But that's not what we mean by a medical condition. All sorts of things are clusters in personality space - e.g. "nerd", "extrovert", and "workaholic." Generally speaking, if you aren't unhappy with something, and it doesn't inhibit your functioning in the world, it's not a medical condition. If Mr. X says "I wish I wasn't such an extrovert, please fix me doctor" then arguably Mr X. has a condition. But if Mr. Y says "I wish Mr. X wasn't such an extrovert," but Mr. X is fine with his personality, then it's much harder to argue that Mr. X has a condition. This is doubly so if there is no known working treatment. This works equally well if you substitute "sociopath" for "extrovert."
Typically, sociopaths do not believe they have a problem. Well, OK. If they break the law, they should be sanctioned/punished/etc. And to the extent that behavioural therapy/compulsory drugs/whatever can force them to behave more lawfully, then great. But we shouldn't pretend that we are treating them for any problem they have - we're training/forcing them to comply with our ethical norms, and that's all there is to it.
Sociopathy/Psycopathy/ASPD, however, are not well understood by anyone.
Here's a different way of putting it. I have no particular background in psychology. I have never taken a class on it. I have read, over the course of my life, a few books on topics in psychology that I found interesting. These were books intended for a lay audience, not for people who actually wanted to seriously study the field. I have never read a textbook. The extent of my knowledge of sociopathy/psychopathy/ASPD is from reading the wikipedia page on those topics, and TV shows/mo...
I have consistently, over the course of my life, heard people describe sociopathy and related mental illnesses as being caused by a lack of empathy. This, intuitively, seems wrong, since that seems like a massively important brain function, that really ought to have a major and extremely visible effect on your thinking. Now, obviously it does have a serious impact (amoral behavior, etc), but it seems rather unlikely to me that someone like this really shouldn't be able to mask themselves as normal. (I'm also not sure why lack of empathy would make you want to dissect squirrels, but that seems like a side issue).
The upshot is that I'm seriously confused about what these mental disorders are, and how they work. Do these individuals have the ability to empathize but not sympathize? I'm not sure how that would work, but I'm not at all an expert on cognitive science. Is the standard explanation for these disorders just wrong? Are these people genuinely figuring out what humans care about by looking?
(As a side note, if it's the last one, has anyone considered getting a sociopath to work on FAI? Bringing someone who can't be trusted into an enterprise is a risky move, but if there genuinely are people in the world who have spent their entire lives practicing working out human emotions without feeling them...)