Hogwash, or a brain activity breakthrough? Friday evening came with a long-awaited look at the work of Neuralink, Elon Musk's ambitious brain-computer interface implant startup. In the streamed progress update, Musk ran down a PowerPoint overview of the technology's capabilities, which he likened to "a Fitbit in your skull." The coin-shaped implant will read and wirelessly transmit brain signals...
