Any psycho is mentally ill, they all are, and they may well be retarded but they just might not be. It is impossible to know for sure without watching them closely to see them slip up and let their intelligence slip out. I'm not saying they try and hide it, though some do, but that social misfits often look retarded. I have known a few brilliant psychos that were diagnosed as retarded by professionals. I don't care how much training someone has telling the difference between slow and sociopath can be very difficult; a challenge most people aren't up to.
My tale isn't sad. If I had been on that Grey Hound with the knife guy or in Vancouver with the hammer guy I would have been able to solve the problem with only the psycho getting his. That isn't sad. I feel damn good about that. I see people who have had a "happy story" and they look like they live in a cloud to me. I wouldn't want to live in a place that out of touch with reality.
Retarded means developmentally delayed. Mentally ill means, well, mentally ill. They aren't the same thing Scott. And psychopathic is a diagnosis all its own, which yes would fall under the category of ill, but, being ill doesn't make on psycho. The fact that you can't differentiate between those would explain a LOT as to why you and I don't see eye to eye on this. Mentally ill is not the same as psychotic. Mentally ill can mean a host of different things, and can produce violent tendencies in some of its variations (which, btw, wasn't the issue with my friend), but it doesn't make someone a psycho by any scientific definition of any sort. And adding sociopath into the mix... well... sociopaths blend in and are indiscernible from you Scott. Pointless to sit and discuss it with someone who doesn't understand what any of it actually means.
As for being out of touch with reality... by the time anyone realized and reacted to Tim McLean being attacked he had already received two or three quick knife thrusts to the throat and chest, and the passengers reported being sprayed with blood. He wouldn't have survived, even if you had immediately jumped up and taken action.... all you would have done is blocked the aisle so that anyone behind them couldn't exit, and put more people at risk. But, instead, you have some fantasy about being able to leap up and save the day AND him? I find that... interesting. (she says in her best Freud imitation)