Abstract

Cryonics is the practice of cryopreserving the bodies or brains of legally dead individuals with the hope that these individuals will be reanimated in the future. A standard argument for cryonics says that cryonics is prudentially justified despite uncertainty about its success because at worst it will leave you no worse off than you otherwise would have been had you not chosen cryonics, and at best it will leave you much better off than you otherwise would have been. Thus, it is a good, no-risk bet; in game-theoretic terms, cryonics is a weakly dominant strategy relative to refraining from utilizing cryonics. I object to this argument for two reasons. First, I argue that there is a practically relevant chance that cryonics will put you into an inescapable and very bad situation. Hence, cryonics is neither a no-risk bet nor a weakly dominant strategy. Second, I argue that the experience of being reanimated and living in the distant future would likely be transformative, and this likelihood undermines your justification for thinking that reanimation would be beneficial to you. I conclude that the standard argument does not show that cryonics is prudentially justified.