Have we as a collective eaten every species of snake in the world to know that absolutely none of them are poisonous? Can we rule out genetically modified snakes that would make them so? Or maybe they are fed a diet of human flesh and a steadily increasing amount of some supplemental toxic substance such that they have become immune to the toxin as it slowly builds up in the snakes’ flesh causing them to also become poisonous? Is it possible most snakes are actually poisonous but only if consumed in sufficient quantity on Thursday November 18th, 2084 at 6:30 p.m.?