Just out of curiosity, what part of the world are these puddles in? Assuming that all technology won't be disappearing anytime soon, it's probably safe to share ;)
(1) I doubt that ANWR has ground-level oil because I think that the Inuit would have exploited it.
(2) The Inuit know, or at least knew, how to survive in that area without significant tech. If "all the tech disappears" happens in winter and they wake up naked and outside (with no inside available), they don't wake up. If it's summer, they can cope.
