Why you could have once watched me demolishing a huge ants nest. Why an utterly chaste nun in Florida contracts an STD while hedonistic people in California seem to cavort concupiscently with impunity? How even untrue ideas spread across groups of people and through entire societies with almost virus-like effectiveness. How a Belgian rogue plagiarized a brilliant South African scholar. If the Internet and telephone systems are the country’s nervous system, what is its digestive system?