X-Message-Number: 18831
From: 
Date: Mon, 18 Mar 2002 12:19:03 EST
Subject: recovery from cryonics state

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I know the classical answer to that question is: Nanotechnologies will do 
that. It looks to me as nothing more than a particular religion based on 
science jargon.

I have said before that my favored option was uploading. Indeed, the 
information processing requested will be at hand in 30 years or so and only a 
"brain reader" needs a particular effort to be built.  The brain reader may 
be conceived as two systems: 

A magnetic resonance imaging  (MRI) system using polarised helium 3 to map 
the brain at the cell level and : 

A Quantum Non Demolition (QND) X-ray scanner able to go down to atomic scale 
in sensitive zones, that is, near synaptic buttons.

Neither system need to thaw a body, so the process keeps all elements in 
place for a more advances nano repair process.

UP loaded brains can interact with the world with a robot body or a direct 
link with a biological body. In that later case I assume that body is an 
animal one for legal reasons. I have said all of that before, now I think we 
can go a step beyond:

Recent progres in the domain of  stem cells may be the key to build back a 
full body. Our body is a matrix of structural elements excreted by cells and 
used as a scafolding by all the cells. The classical idea is to repair all 
cells, here my new idea is to use only the structural elements and recover 
only some stem cells. These cells could be grown outside the body and then 
injected in the defrosted body.  They would colonize the structure, clean off 
the death original cells and take their place.

That would work for the body, unfortunately, the brain content would be 
erazed in the process. This may be a solution if the information content is 
storred in a computer or a similar device. We need then "simply" a brain 
monitor able to build a two way link between the new empty brain and the old 
one .

The main point here is that current technology gives a fairly precise roadmap 
of what could be a cryonics recovery process.

On a practical side, the more immediate progress this technology suggest is 
to extract from corpses some cell extract, may be a part of the bone marrow,  
and keep them in a recoverable state. Full body or even organ reversible 
cryoprotection may be some time in the future but isolated cell could be 
protected right now. With them, body recovery could be only 5 - 10 years in 
the future.

Yvan Bozzonetti.


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