The world will end tomorrow (uh, hypothetically… yeah, that’s the ticket!) and I would like to be duly prepared for the eventual rebuilding of humanity.
Assume a planet-wide catastrophe that leaves only small bands of humans in an otherwise iron-age existence, but with 100 percent literacy. Only five [non-religious] texts survive and they just so happen to be the most practical and most useful in the long-term restoration of today’s store of human knowledge.