Editing Cryonics (section)

==Conceptual basis==
Cryonicists argue that as long as brain structure remains intact, there is no fundamental barrier, given our current understanding of physics, to recovering its information content. Cryonics proponents go further than the mainstream [[Scientific consensus|consensus]] in saying that the brain does not have to be continuously active to survive or retain memory. Cryonicists controversially say that a human can survive even within an inactive, badly damaged brain, as long as the original encoding of memory and personality can be adequately inferred and reconstituted from what remains.<ref name="moen" /><ref>{{cite journal|author=Doyle, DJ|date=2012|title=Cryonic Life Extension: Scientific Possibility or Stupid Pipe Dream?|journal=Ethics in Biology, Engineering and Medicine|volume=3|issue=1–3|pages=9–28|doi=10.1615/EthicsBiologyEngMed.2013006985}}</ref>

Cryonics uses temperatures below −130&nbsp;[[degree Celsius|°C]], called [[cryopreservation]], in an attempt to preserve enough brain information to permit the revival of the cryopreserved person. Cryopreservation is accomplished by freezing with or without [[cryoprotectant]] to reduce ice damage, or by [[Cryopreservation#Vitrification|vitrification]] to avoid ice damage. Even using the best methods, cryopreservation of whole bodies or brains is very damaging and irreversible with current technology.

Cryonicists call the human remains packed into low-temperature vats "patients".<ref>{{cite journal | journal=Smithsonian Magazine| vauthors=Germain J | title=200 Frozen Heads and Bodies Await Revival at This Arizona Cryonics Facility |  date=21 October 2022 | url=https://www.smithsonianmag.com/smart-news/200-frozen-heads-and-bodies-await-revival-at-this-arizona-cryonics-facility-180980981/ }}</ref> They hope that some kind of presently nonexistent [[nanotechnology]] will be able to bring the dead back to life and treat the diseases that killed them.<ref>{{cite journal |last1=Crippen |first1=DW |last2=Whetstine |first2=L |title=Ethics review: Dark angels – the problem of death in intensive care |journal=Critical Care |volume=11 |issue=1 |page=202 |year=2007 | pmid=17254317 |pmc=2151911 |doi=10.1186/cc5138 |doi-access=free}}</ref> [[Mind uploading]] has also been proposed.<ref>{{cite news|title=Frozen in time: Oregon firm preserves bodies, brains in hopes that science catches up |url=http://portlandtribune.com/pt/9-news/293801-170586-frozen-in-time-oregon-firm-preserves-bodies-brains-in-hopes-that-science-catches-up|access-date=February 21, 2016|work=[[Portland Tribune]]|date=18 February 2016|archive-date=July 11, 2017|archive-url=https://web.archive.org/web/20170711171113/http://portlandtribune.com/pt/9-news/293801-170586-frozen-in-time-oregon-firm-preserves-bodies-brains-in-hopes-that-science-catches-up|url-status=dead}}</ref>