Elon Musk says Neuralink is developing two technologies that could change how humans interact with the world. While Blindsight aims to help blind people see, Telepathy could let users communicate. Neuralink has given a glimpse of how it builds on top of its brain implants, detailing a 72-hour engineering sprint its. Elon Musk says Neuralink’s Telepathy could enable thought-based communication faster than speech or typing.