mirandakatz writes: Neural implants—or neuralprostheses, as those in the know call them—still sound like the stuff of science fiction. But brain-machine interfaces are all the rage lately, with everyone from Facebook to Elon Musk getting in the race. One company in particular, Kernel, is making progress when it comes to building and implanting chips into the skulls of Parkinson’s and Alzheimer's patients to reprogram their neural networks and restore some of their lost abilities. But the ambitions of Kernel's CEO, Bryan Johnson, are bigger than that: He thinks chips will go mainstream among healthy people within a decade, and he can't wait to chip himself. At Backchannel, Steven Levy sat down with Johnson to discuss the future of brain-machine interfaces, and why even people most opposed to "chipping" themselves might wind up drinking the Kool-Aid.