“How much can I do this and still be me?” Caplan asks. “Not every intervention threatens our sense of who we are, but if you really started to change your memory speed, or clearly started to be able to do things that you weren’t able to do before, like learn languages in a day, or had infrared vision, you do start to get to questions about, ‘Is that still me?’
“My answer to that is, I’m not sure. But that won’t stop people.”
I, Cyborg
Rehab patients like Jesse Sullivan are teaching scientists how to connect our brains directly to machines. (Chicago Trib via Newsday; old, quite long)