People are by nature illiterate and innumerate, quantifying the world by “one, two, many” and by rough guesstimates.21 They understand physical things as having hidden essences that obey the laws of sympathetic magic or voodoo rather than physics and biology: objects can reach across time and space to affect things that resemble them or that had been in contact with them in the past (remember the beliefs of pre–Scientific Revolution Englishmen).22 They think that words and thoughts can impinge on the physical world in prayers and curses. They underestimate the prevalence of coincidence.23 They
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