I am writing a book set a thousand years in the future. Do I actually believe that our modern-day theory of mind and mental illness will hold any water then? No, of course I do not.
Do I have characters blithely going on about sociopathy anyway? Yeah, I do. Because I'm translating from Future!Talk into modern English, or something. Well, I'm not inventing Late Postmodern English in a month and a half.
Anyway, 900 words. Going to bed now, because I can't keep my eyes open.