home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.cryonics
- Path: sparky!uunet!shearson.com!snark!pmetzger
- From: pmetzger@snark.shearson.com (Perry E. Metzger)
- Subject: Re: Person on a stick
- Message-ID: <1992Jul23.151022.23629@shearson.com>
- Sender: news@shearson.com (News)
- Organization: /usr/local/lib/news/organization
- References: <TSF.92Jul9144927@U.ERGO.CS.CMU.EDU> <1992Jul9.140159.6019@hellgate.utah.edu> <1992Jul22.201713.14552@midway.uchicago.edu>
- Date: Thu, 23 Jul 1992 15:10:22 GMT
- Lines: 47
-
- In article <1992Jul22.201713.14552@midway.uchicago.edu> wag5@midway.uchicago.edu writes:
- > However, the brain is a very delicate organ. Removing one neuron
- >can have very profound effects.
-
- Neurons die in significant numbers every day. Give evidence for your
- claim, please.
-
- >Mis-timing could also wreck a system.
-
- Yes, but neurons aren't that precise in their firing patterns, and
- there is no reason to
-
- >A functioning mature brain, to be recreated, would also require an
- >exact duplicate of not only the orientation and mapping of the cells,
- >but also complete duplication of the states of those cells
-
- No. Brains have been "stopped" and restarted, so any sort of "dynamic
- state" is obviously not important (see dog experiments, below).
-
- >and of the
- >chemical environment in which those cells live.
-
- Why couldn't that be reconstructed?
-
- >By adding chemicals
- >to the brain which lessen the hazards of tissue destruction during
- >freezing, one overbalances the system.
-
- Dogs have been put through most of the cryopreservation process and
- taken to temperatures just above freezing for on the order of hours,
- and then been "restarted". Obviously, the problem isn't as bad as you
- seem to think.
-
- Lets not forget that real-world systems like human brains are NOT very
- delicate. They have all sorts of faults occuring every day, and they
- absorb and manage them. They get dosed with all sorts of chemicals,
- and survive the experience. They lose cells, get jostled by
- concussions, even get hit by bullet fragments, and still seem to work
- more or less all right. The damage from freezing should be
- straightforward to repair quite completely; its very localized and
- does not disrupt cell structure very greatly.
-
- --
- Perry Metzger pmetzger@shearson.com
- --
- Just say "NO!" to death and taxes.
- Extropian and Proud.
-