Our ancestors reacted to parasites with overwhelming revulsion, wiring the brain for morals, manners, politics and laws
"When we’re worried about disease, it appears, we’re drawn not just to Mama’s cooking but also to her beliefs about the proper way to conduct ourselves – especially in the social arena. We place our faith in time-honoured practices probably because they seem like a safer bet when our survival is in jeopardy. Now’s not the time to be embracing a new, untested philosophy of life, whispers a voice in the back of your mind."
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