O n a Friday in April , I hopped into an Uber to a fish market in San Francisco with a couple of tech founders on a mission to buy lobsters. Not for dinner, but for science: The duo dreamed of one day altering human consciousness, but they would start by toying around with some crustaceans. They intended to perform neurosurgery on the lobsters in the hopes of controlling them with an AI bot. Leading the way was Elliot Roth, a bearded 32-year-old wearing a black T-shirt with Longevity printed