In the Third World, it will be more like, time to eat grass.
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I have made it a point to watch food preservation videos from the 3rd world. Some are temperate, some tropical, some at high altitude.
They are using techniques used for at least a 100 years and appear accomplished and successful. The only question is what food is available to start with.
It will be the sophisticated urban dwellers of the world who graze on restaurants who will suffer. And even there, given the influx of successful 3rd worlders, I expect to see wood-fire grills in the streets cooking whatever can be found. Pigeon kabab, anyone?
Another good reference is Selco who survived in Yugoslavia during their 4 year war.
In one of my many abortive attempts to read a book — OCD can make it a b*tch for me to read — I started reading one of Selco’s books. He actually did occasionally eat soup in which grass was one of the ingredients, IIRC.
With all the available fiction and non-fiction resources out there to tell us how things can be (Selco, Bracken, Aguirre, etc.), why would anyone in government want to re-create these awful conditions, and why would anybody want to enthusiastically vote for such people? The answer: they simply don’t think like the rest of us.