Why You Will One Day Have a Brain Computer Interface

Implanting a microchip inside the brain to augment its mental powers has long been a science fiction trope. Now, brain computer interface is suddenly the hot new thing in tech. This spring, Elon Musk started a new company, Neuralink, to do it. Facebook, at its F8 developer's conference, showed a video of an ALS patient typing with her brain. But earlier to the game was Bryan Johnson, an entrepreneur who in 2013 made a bundle by selling his company, Braintree, to Paypal for $800 million.