Elon Musk doesn’t think his newest endeavor, revealed Tuesday night after two years of relative secrecy, will end all human suffering. Just a lot of it. Eventually. At a presentation at the California Academy of Sciences, hastily announced via Twitter and beginning a half hour late, Musk presented the first product from his company Neuralink. It’s a tiny computer chip attached to ultrafine, electrode-studded wires, stitched into living brains by a clever robot.