I like the last comment - but I suspect it is more likely that civilisation has ceased to exist than that we are in a simulation - who in their right minds would create a simulation this boring??? (except of course if we are talking the Matrix argument that human's couldn't accept a simulation that was actually good).
Such a interesting guy, just watched the full interview with him (1 hr 24) well worth watching, covered topics including space travel, colonising mars, Ai, automization, electric cars...