X-Message-Number: 2084
Date: 09 Apr 93 07:11:34 EDT
From: "Steven B. Harris" <>
Subject: CRYONICS From Bigfoot to Coldroom?

Dear Cryonet:


   Brian predicts that the bigfoots will be offline after the
cold room gets built, but I'm not sure I like the idea of putting
patients who've been in LN2 back at -135.  Cracking at -196
results from differential thermal expansion below Tg, and if you
warm back up to Tg again, presumably you'll get all the stresses
now pushing back the other way, but with new boundaries and
fractures moving past each other.  No guarantee that all the
parts that were dis-aligned by the first process will re-align in
the second, since a lot of irreversible events will have occurred
(i.e. fractures will not re-anneal at the same temperature and
expansion point that they first gave way!).  More likely, we'll
lose (or at least hide) more information in this process instead,
as we add yet another stir of the jigsaw puzzle.  Perhaps best
then to keep the poor sods who are in LN2 there until 
resurrection day, unless we are absolutely forced to move them by
financial constraints.  

   Riddle: in the event of financial crisis, then, which will
cause more net damage: 1) converting to neuro and storing body
only at -135, leaving head at -196, or 2) moving everything to -
135 C ?

   Obviously, experiments with animal brains are in order.

                                      Steve

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