We say "the fish has iron in it, you need iron" because we have a basic level of education. They say "the fish is lucky, I'll put that in the pot if the community says to" because community and tradition are good proxies for safety if you do not have that education.

Also, if we miss a pay check or a grocery store trip, we're fine. If they zig when they should zag it can mean death or deprivation. We should not lightly mock choices made when the stakes are so high and the known and understood information so low.

I don't have the answer here but I know that "well, Darwin will get them" isn't it.