David Eagleman's talk at the Long Now Foundation > http://www.longnow.org/seminars/02010/apr/01/six-easy-steps-avert-collapse-civilization/
Civilizations always think they're immortal, Eagleman noted, but they nearly always perish, leaving “nothing but ruins and scattered genetics.” It takes luck and new technology to survive. We may be particularly lucky to have Internet technology to help manage the six requirements of a durable civilization […] But if the Net is so crucial, what happens if the Net goes down? It may have to go down a few times before we learn how to defend it properly, before we catch on that civilization depends on it for survival“ – Stewart Brand