What Do We Know? “Meet me on a starship!” my friend told me five years ago when he decided to die. He said he’d had enough; eighty-six was plenty of time spent in this world and needed some rest from it. A week later, he was gone, just like that. It was not the first time I saw someone setting their mind on departing and succeeding; I had seen it before in old age. All seems good, and suddenly people decide enough is enough. In a few days, their bodies shut down quietly, and they pass peacefully. I was amazed...