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- Path: sparky!uunet!stanford.edu!ames!elroy.jpl.nasa.gov!nntp-server.caltech.edu!earl
- From: earl@cco.caltech.edu (Earl A. Hubbell)
- Newsgroups: sci.cryonics
- Subject: Re: What's the Deal?
- Date: 19 Nov 1992 03:59:08 GMT
- Organization: California Institute of Technology, Pasadena
- Lines: 48
- Message-ID: <1ef3ecINNr3h@gap.caltech.edu>
- References: <92323.111631JPS127@psuvm.psu.edu>
- NNTP-Posting-Host: alumni.caltech.edu
-
- <JPS127@psuvm.psu.edu> writes:
-
- > I just don't get it, is this line a support group for you people? I'm gener-
- >ally very open minded but I just don't see how you people can fall for such a
- >pie in the sky idea. Honestly, I don't believe in cryonics and technology be
- >damned I don't think revival is possible.
- >cesses. Certainly efforts can be made to reduce the amount of freezing damage,
- >but as for storing, and I hate to be the first one to point this out to you, we
- >are highly ordered beings. Entropy always wins! Certainly it is possible to
- >freeze tissue to a level where biodegradation is a minimum, but chemical change
- >will have to occur - or are you frozen to 0K? Yes low temperature will slow
- >any chemical process but not enough over time. No technology will be able to
- >repare molecular structures.
-
- This is not clear - note that the vast majority of molecules in
- living beings are identical (hemoglobin tends to be the same from red
- blood cell to red blood cell, the phospholipids in the cell walls are
- alike) - this suggests the possibility of restoring even extensive
- microscopic damage given a technology that can work on an atomic scale.
- However, microscopic damage seems not to be that extreme...
-
- > Macroscopically it is possible to freeze and thaw tissue, I've got a steak in
- >it the taste will be fine. But microscopically, I just don't think so! Let's
- >not even consider the bursting of lysozymes and their enzymatic distruction of
- >all cellular components - I'll assume you guys have that one figured out - let
- >us consider instead the stress and strain placed on all cell constituents when
- >they enter and leave the crystal lattice. Possibly some of the organelles can
- >survive, but all? I have a hard time believing that.
-
- I'll just point out the standard example of seeds, embryos, and
- other such biological structures being stored at liquid nitrogen temperatures
- and successfully being revived (and having custody battles fought over
- them!) This strongly suggests that 'microscopic' damage is minimal enough
- to be repaired, even by the normal cellular repair mechanisms.
- The >macroscopic< damage (initial death, cracks in organs due
- to different freezing rates, ice crystals damaging large numbers of
- cells, assorted 'system integration' problems with higher organisms) seems
- to be the major hurdle.
-
- > Answer my post, convince me, and I'll go along quietly. Like I said, I'm
- >open minded - you just better have the answers I need.
-
- > - James P. Smith -
- --
- 'You can tell I'm educated/I studied at the Sorbonne *earl@tybalt.caltech.edu
- Doctorate in Mathematics/I could have been a Don *Earl Hubbell
- I can program computers/Choose the perfect Time *Opinions solely mine.
- If you've got the inclination/I've got the Crime" -Opportunities, Pet Shop Boys
-