Musk demoed the company’s brain-computer interface technology on Friday in live pigs. He described it as “like a Fitbit in your skull.” Musk said the Neuralink can help fight blindness, memory loss, insomnia, and other medical conditions. lon Musk’s brain-machine interface company, Neuralink, conducted a live demo of its technology on Friday, showing a coin-sized device without wires. The Tesla and SpaceX CEO brought along three pigs, who had varying levels of interest in cooperating. Eventually, the audience was shown real-time neural signals from one of the pigs, which Musk named Gertrude. According to Musk, Gertrude has had the implant...