I love survivor. Don't make to watch it all, but try to catch up later on.
The thing why they have survivors that go out fast is because they go through very thorough psych tests, and they put all variants in the show. They know some of them will most likelly go out fast, but that's the point. They try to acomodate all age groups aswell. I've seen this in most reality shows. BB does that aswell. You always have a psycho bitch/guy in there (several usually).
Yea, maybe it was common knowledge, just wanted to say it
GOOOO survivor :P