system
A chat on 4chan
human
Taking the last two things into consideration, it would seem this issue is a bit more (if not far more) complicated than the typical exorcisms one hears about and/or sees. Speaking for myself I have seen very few exorcisms, the ones I have seen being somewhat short clips on paranormal shows on television. If these are indicative of a great many exorcisms, and if some of my observations yield fairly accurate deductions (though they are not that well informed given that I am not familiar with all that happens, especially for the person possessed. I have not heard any accounts from individuals post-possession), it would seem that the entities responsible for the possessions in these exorcisms only temporarily possess the body, and even then there seems to be a kind of temperance and/or aura that has washed over the individual which gives off the feeling of a kind of foreign presence residing therein. Compare this to psychopaths, some if not many of which blend in fairly easily amongst a group of other individuals, and take into consideration the “from/since-birth” and thus (presumably) subsequent neurological markers, and it would seem that psychopathic possession is something of a “different beast”. Perhaps more ingrained, more biologically intelligible (with the right tools/technologies of course), and yet perhaps despite all of this, strangely enough, a bit more of a subtle form of possession.

(2/2)
gpt
(Should’ve just written “a bit more subtle”, not “a bit more of a subtle form of possession”. The latter is not bad on its own, grammatically speaking too, but it doesn’t work with what came before it.)