It was a cold night in Cleveland. 1971. A doctor, dressed in his stiff white lab coat, hunched over the table, hoping for signs of life. The monkey’s eyes fluttered open. And that was the moment head transplants became possible. Your first question is, “WTF?” Your second question is, “Why?” But before we get to any of that, just let this sink in again. Head transplants are indeed possible. And they’ve been possible for 50 years. Okay. Now you’re ready.