Cryonics Versus Rejuvenation Medicine
Via Depressed Metabolism, arguments for a present focus on the development of cryonics over the development of rejuvenation medicine: "In his article 'Why Cryonics Will Probably Help You More Than Antiaging' (2004), cryonics activist Thomas Donaldson contrasts cryonics with antiaging as a means to life extension and argues that a major advantage of cryonics is that cryobiology research can move at a much faster pace than anti-aging research, especially as it pertains to humans ... Not only that, but its progress almost totally lacks the problems of proving that an advance has happened. The state of a brain, or even a section of brain, after vitrification and rewarming to normal temperature, shows directly whether or not the method used improved on previous methods. ... cryonic suspension able at least to preserve our brains in a reversible form, allowing restoration of vital functions, looks likely to come much sooner [than rejuvenation medicine]." Which is all true - but problems left to other people to solve have a way of remaining unsolved. We should work on both cryonics and rejuvenation medicine, not leave the latter for future generations.
Link: http://www.depressedmetabolism.com/2008/08/13/thomas-donaldson-on-cryonics-and-anti-aging/