In Berkeley, California, where I lived for many years, crackpot theorists of every variety are as common as cockroaches. I have known people who sincerely believe that the world's economic order is controlled by a secret cabal of bankers, who believe that crystals programmed in ancient Atlantis speak to them personally, who believe that a perky blond equestrienne from the Pacific Northwest is the incarnation of a 40,000-year-old warrior.
Even today, I know…