The combination of knowledge and intelligence. That can't be taken away from you. Second best is to have a connexion to someone who has that if you don't have it yourself. Preferably that someone has a vested interest in you.
(MUAHAHAHAHAHAHA!!!!!!!!! I don't think I'll say what inspired this post.)
I think I posted something similar to this in the past, but this is a reminder. If you do have something vested in surviving to the next era, regardless of how much stuff you have, if you don't have the items I mentioned; you are toast!
