The leading proponents of this view are Elon Musk and Bryan Johnson, who have both created companies, Neuralink and Kernel respectively, to speed development along. But everyone from Facebook to DARPA has gotten involved. Facebook wants neurotech that allows you to think instead of type, replacing the keyboard with the mind as the ultimate social media interface. DARPA sees BCIs as a next-generation battlefield technology, and wants one that can record 1 million neurons simultaneously while stimulating a hundred thousand. There are also a multitude of startups crowding into the space, from
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