X-Message-Number: 33037
Date: Sat, 6 Nov 2010 16:57:54 -0400
From: "Perry E. Metzger" <>
Subject: nanomachines
References: <>

> From: Gerald Monroe <>
> Date: Fri, 5 Nov 2010 08:54:09 -0500

> >
> >   Neither a desktop nanofactory nor glucose
> > oxidation can adequately explain how
> > untethered nanobots could operate at
> > cryogenic temperatures.

Neither of those assertions is correct.

> We don't need untethered nanobots to bring back the cryonically
> frozen
> patients.  In fact it might not even be possible within the laws of
> physics for untethered nanobots to do the job, because the
> machinery will probably require a large amount of energy and
> coolant to remove waste heat.

Which law of physics would this be specifically? Have you done
calculations here? Can you show the calculations?

I doubt you can show such a thing, since simply by slowing down
operations you can reduce the amount of energy released per unit time
to an arbitrarily low level, and at some point, cooling will be
feasible. If it would take too much energy to do the repair in a week,
then do it in a month, or over a year, or over 100 years -- at some
point, you won't be using enough energy to make cooling
impractical. That's not to say that I think cooling actually would be
impractical even at pretty high throughput, but the assertion here was
even more bold, invoking the "laws of physics" without considering how
simple it would be to get around the proposed objection.


Perry
-- 
Perry E. Metzger		

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