The social network company hopes neuroscience will give it an advantage in the AI race.Stephanie Arnett/MIT Technology Review | Getty, Alamy, Shutterstock Back in 2017, Facebook unveiled plans for a brain-reading hat that you could use to text just by thinking. “We’re working on a system that will let you type straight from your brain,” CEO Mark Zuckerberg shared in a post that year. Now the company, since renamed Meta, has actually done it. Except it weighs a half a ton, costs $2 million, and ...