Casey Harrell has had a set of electrodes embedded in his brain for almost three years. Harrell, who has amyotrophic lateral sclerosis (ALS) and is paralyzed, first used his brain-computer interface (BCI) to speak" sentences with the help of a research team in 2023. Since then, Harrell has clocked thousands of hours of use. He...

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology. This man with ALS is the first power user" of a brain implant that lets him speak Casey Harrell has had a set of electrodes embedded in his brain for almost...