Half man, half machine—The future is here.
Neuralink just made history by implanting a computer chip in a human brain for the first time.
The patient, paralyzed after a car accident, is now playing chess using only his mind. 
Elon Musk believes this brain-machine interface is how humans can merge with AI and keep up with its rapid evolution.
Revolutionary or terrifying? Is this the next step in human evolution?