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<p>Following the Vaire/Michael Frank realization:</p>
<p>I have been vaguely familiar with SNLs (Sandia National
Laboratory not Saturday Night Live) MEMs work so it is fitting
that they Frank is looking at using micro mechanical systems in
place of LC circuits to facilitate the (sinusoidal?) waveforms
implied for the adiabatic component in reversible/efficient
computing. I haven't sorted the implications of MEMs vs
electrical/LC methods, intuition favors the latter, but probably
biased by growing up in the electronic/digital era? <br>
</p>
<p> I need to revisit Sterling/Gibson's seminal Steampunk Novel: <a
href="https://en.wikipedia.org/wiki/The_Difference_Engine">The
Difference Engine</a>? I'm seeing a play for Carnot and
Clausius in that alternate timeline as well as Ada Lovelace also
focusing on reversible algorithms?<br>
</p>
<p>I haven't read Bennett's seminal work (maybe back in 1984 but not
since?) but it appears his logical construct was a reversible
Turing machine: <br>
</p>
<blockquote>
<p><a
href="https://mathweb.ucsd.edu/~sbuss/CourseWeb/Math268_2013W/Bennett_Reversibiity.pdf"
class="moz-txt-link-freetext">https://mathweb.ucsd.edu/~sbuss/CourseWeb/Math268_2013W/Bennett_Reversibiity.pdf</a></p>
</blockquote>
<p>I don't know if we've beaten the TANNSTAFL horse thoroughly
yet... <br>
</p>
<p>EricS writes: <br>
</p>
<blockquote>
<p><i>Now, this doesn’t prove that energy and information are
equivalent in the same way that Einstein proved that mass and
energy were equivalent, but it is a tantalising possibility.</i></p>
</blockquote>
<p>My weak grasp on the root of the reversibility argument is that a
great deal of the "information" that is generated in a computation
is in some sense extraneous? I wish I knew more what I meant by
that.</p>
<p>I took this opportunity to ride one of my hobby horses down the
road a little: a variation on Gosper's HashLife which is designed
to support a measure of computational complexity. I'll elaborate
under separate cover.<img
src="cid:part1.hJbB0es8.hGOxzVv2@swcp.com"
moz-do-not-send="false" width="853" height="431"><br>
</p>
<blockquote> </blockquote>
<p><br>
</p>
<blockquote> </blockquote>
<br>
<div class="moz-cite-prefix">On 1/18/25 5:03 PM, steve smith wrote:<br>
</div>
<blockquote type="cite"
cite="mid:db727e93-0c98-436b-bdfb-42dec31dfd3d@swcp.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<p>Pieter -</p>
<p>Good find. It lead me to Vaire and then to the Sandia/ABQ
work of Michael Frank who left to join/found Vaire this
summer? It is possible that my renewed interest in reversible
computing might have been triggered subliminally by some
reference to both/either? </p>
<p><a
href="https://techcrunch.com/2024/07/01/vaire-computing-raises-4-5m-for-reversible-computing-moonshot-which-could-drastically-reduce-energy-needs/"
moz-do-not-send="true">https://techcrunch.com/2024/07/01/vaire-computing-raises-4-5m-for-reversible-computing-moonshot-which-could-drastically-reduce-energy-needs/
<br>
</a></p>
<p><a href="https://vaire.co/" class="moz-txt-link-freetext"
moz-do-not-send="true">https://vaire.co/</a><br>
</p>
<p>I thought I'd been triggered by the combination of the demands
of AI and on data centers (my daughter closed her gym of 10
years to take a job in a data center development startup a year
ago... ). <br>
</p>
<p>My inability to attribute such things, parallels that of LLMs
(or more generally transformer models)?</p>
- Steve<br>
<br>
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