Dechronification is the concept of rejuvenation developed by Robert Freitas that when done through Nanotech the user reverses the aging process Freitas suggests that people will be able to utilize Nanorobots to remove accumulating metabolic toxins using resperocyte and microbivoreclass intercellular nanorobots in every tissue cell correct genetic damage using chromosome replacement therapy in every tissue cell and repair persistent cellular damage using cell repair devices in every tissue cell This idea is a form of futurology  Kurzweils version of Death Is An Outrage More concise easier to read Kurzweil is a colleague of Freitas I think  Death Is An Outrage an essay about the evils of death in the world and how itll be countered  Nanotechrelated News Article about nanodetoxification and eventually dechronification