A lot of what we today consider fallacies are in fact very reasonable heuristics if you live in the conditions of our ancestors from before civilization. Though with illusion of control, people are pretty good if inventing it for themselves if no external placebo is provided. Consider rain dances, or various folk beliefs around curing diseases...
Oh the folk cures are the best! The ancient Greek ones were literally and figuratively, batshit. IIRC To treat epilepsy it was recommend that you eat the heart of a black donkey beneath the light of the moon on some specific night.