Many thanks to the commenters on my review. I won’t be agreeing with all of you, but I value your input for increasing my understanding of what others think. I have some related ideas on how to think about the issues raised specifically by Lightning Fall and generally by “preppers” and, indeed, anyone anticipating a societally disruptive crisis in the near future.
NB: this is an essay in the original sense of “attempt.” It is unlikely to fully represent my thinking on these issues even a few years hence; and whether you agree with me or not, I encourage you to think these things through based on your own abilities and experience, and then act as your specific situation appears to require. Hayekian distributed local knowledge may save us. Central planning, as I hardly need admonish this audience, will not, and therefore any attempt by me to impose a uniform mental framework should (and undoubtedly will) be firmly rejected.