= 27d567bc2d48d9f40e9ccc20ea370b15)
ciphergoth comments on Optimism versus cryonics - Less Wrong
You are viewing a comment permalink. View the original post to see all comments and the full post content.
= 783df68a0f980790206b9ea87794c5b6)
Loading…= b715d02e85f7b3b4ae65ca3d3e450868)
Subscribe to RSS Feed
Powered by Reddit
= f037147d6e6c911a85753b9abdedda8d)
You are viewing a comment permalink. View the original post to see all comments and the full post content.
Comments (104)
This doesn't alter your overall point much but this seems unlikely. Aside from the issue of the high probability of something going drastically wrong after more than a few centuries, low-level background radiation as well as intermittent chemical reactions will gradually create trouble. Unfortunately, estimating the timespan for when these will be an issue seems difficult but the general level seems to be somewhere between about 100 to a 1000 years. The idea of reanimating someone "thousands" of years in the future is extremely unlikely to work even with perfect preservation.
Edit: Actually not sure I'm correct above. The most optimistc estimate thrown around seems to be that around 100 years in cryo is about the same as about 20 minutes at room temperature as far as chemical reactions are concerned. That means that if one considers information theoretic death to have definitely occurred 24 hours after death that leaves a decent upper bound on cryonics working until around 7200 years which is a lot higher than my estimate above. So thousands seems reasonable as long as one is only concerned about chemical reaction issues and not radiation or systemic failures of equipment.
How Cold is Cold Enough? estimates that 1 second at body temperature is equivalent to 24.628 million years at LN2 temperatures, as far as chemical reactions are concerned. The speed of nuclear processes isn't changed of course.
Hmm, that's a much tighter estimate. (The page is poorly written (and frankly comes across as condescending(telling people that "exp" is some mathematical operation is not helpful) and poorly formatted. This is not good when cryonics already triggers some peoples' crank warning detectors) The math seems correct. That gives a much better bound for when chemical reactions will be an issue. It seems strongly then that my initial estimate that chemical reactions prevent kiloyear preservation is pretty wrong.