Of course I agree it's not easy: I was pointing out some of the difficulties. There's probably no point in arguing about whether the diagnosis or the data prote

Of course I agree it's not easy: I was pointing out some of the difficulties. There's probably no point in arguing about whether the diagnosis or the data protection side is, in general, harder. They're both very hard problems in any case. There are, of course, clever psychopaths who are good at hiding it. But there are also psychopaths that you/I know about but there's still almost nothing you/I can do with that information to warn other potential victims. You're probably right that I've met several sociopaths without knowing it. But I've also met several people whose socipathy became rather obvious to me, yet I never had the opportunity to warn anyone else about them. (Even a rather dimwitted sociopath will realise when I've identified them as such and will then avoid dealing with my close acquaintances whom I might have warned.)