Well, maybe not, but most of the big ones are at least mutually exclusive. So to the OP's point, at various periods throughout history at least ~80% of the popu

Well, maybe not, but most of the big ones are at least mutually exclusive. So to the OP's point, at various periods throughout history at least ~80% of the population were "believing false things", even if we can't agree on which 80% those were.