The point was that survivor bias entails attributing after the event a wrong cause for the success of the winners while ignoring the causes of the failures of the losers.
Can we stick with that then with respect to the survival of Christianity rather than discussing typewriters? With regard to the cause for the failure of one loser - Mithraism - I suggested that one reason it failed is simply that it lacked the female element that Christianity provided. It was men only.
I'm interested in any ideas people may care to retro-fit onto Christianity, provided they don't deal with truth claims about divine inspiration (but believers are welcome to grind their axes). That was implied in my first post. Even Vlad suggested two ideas which do not have to be interpreted in a 'spiritual' sense (if you feel you are forgiven, it doesn't matter if there is no big daddy there doing the forgiving. Psychological explanations work just as well) All suggestions may be well be wide of the mark, but give it a go. Anyone want to expand of wiggi's views about Jung?
Sorry I misrepresented you earlier, blue.