This highly entertaining account hits on some important truths. One is that people have been trying to live forever, forever. I believe that part of the impetus is that people do not fully understand death and its important function and like many things we don’t fully understand, we fear it. I did some extensive research on people who are obsessed with immortality for my book Death: An Exploration. I dedicated a chapter to Peter Thiel and other scions of Silicon Valley (including Ray Kurzweil) who hope to beat the Reaper. I continue to be fascinated with their fascination with living forever. Thank you for this well-thought-out account, it gives me more to ponder.