From the linked article:
"Two-thirds of Americans (65.5 percent) have stockpiled materials to survive a natural or political disaster."
That's so ludicrous I'm tempted to look for the survey data, if it is public.
If the survey question was: "Do you have any canned soup?" And if the "yes" answers were extrapolated to equal "stockpiled materials to survive a natural or political disaster" then 65% sounds about right.
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