[FRIAM] thermodynamics of gambling demons

[Roger Critchlow]

>From yesterday's issue of Science:
https://science.sciencemag.org/content/372/6540/eabc6868, Fluctuations
shape plants through proprioception

Plants constantly experience fluctuating internal and external mechanical
cues, ranging from nanoscale deformation of wall components, cell growth
variability, nutating stems, and fluttering leaves to stem flexion under
tree weight and wind drag. Developing plants use such fluctuations to
monitor and channel their own shape and growth through a form of
proprioception. Fluctuations in mechanical cues may also be actively
enhanced, producing oscillating behaviors in tissues. For example,
proprioception through leaf nastic movements may promote organ flattening.
We propose that fluctuation-enhanced proprioception allows plant organs to
sense their own shapes and behave like active materials with adaptable
outputs to face variable environments, whether internal or external.
Because certain shapes are more amenable to fluctuations, proprioception
may also help plant shapes to reach self-organized criticality to support
such adaptability.

This review is against the view that plant morphology is simply a
deterministic developmental program with environmental noise imposed on it.

-- rec --

On Fri, Apr 23, 2021 at 2:29 PM Steve Smith <sasmyth at swcp.com> wrote:

> programming/problem domain aside, what a "blast from the past" with
> (mostly?) deprecated toolkits/chains/standards:
>
> *SunOS vs Solaris, VGA output, TCL, PERL, C vs C++, and OMG Forth!*
>
> Steampunk or maybe Dieselpunk era hardware/software!   A Clackers' delight!
> On 4/23/21 11:44 AM, Marcus Daniels wrote:
>
> Possibly of interest
>
>   https://qiskit.org/events/physics-of-computation/
>
> There was one of these at SFI for a while, if memory serves.  I never used it.
>
>   http://www.ai.mit.edu/projects/im/cam8/
>   https://people.csail.mit.edu/nhm/cam8.pdf
>
> -----Original Message-----
> From: Friam <friam-bounces at redfish.com> <friam-bounces at redfish.com> On Behalf Of Steve Smith
> Sent: Friday, April 23, 2021 8:26 AM
> To: friam at redfish.com
> Subject: Re: [FRIAM] thermodynamics of gambling demons
>
>
> On 4/23/21 7:20 AM, Roger Critchlow wrote:
>
> https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.080603<https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.080603> <https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.080603>
>
> If the demon "decides" to quit while it's ahead, it "wins", and the
> entropy of the universe decreases.
>
> -- rec --
>
> via https://www.quantamagazine.org/how-maxwells-demon-continues-to-startle
> -scientists-20210422/ <https://www.quantamagazine.org/how-maxwells-demon-continues-to-startl
> e-scientists-20210422/> <https://www.quantamagazine.org/how-maxwells-demon-continues-to-startle-scientists-20210422/>
>
>  I was totally captivated by the Reversible Computing work presented by Margolus, Fredkin, Toffoli in the 1983 Cellular Automata conference at Los Alamos.   I was brand new and easily impressed by some measures but the breadth of work presented during that week was amazing.   Even though I stayed "in" the orbit of all that work on through the first decade of the ALife movement,   I always felt I was pursuing a mirage "just over the horizon".   My day job never aligned with this work so the available time/horsepower I had to pursue it was limited.
>
> I am not surprised to see that Quantum Computing/Information has added it's own twist, I'd be curious if Marcus (or anyone else) has some first-hand perspective) on this.
> https://arxiv.org/abs/quant-ph/9503016
> http://people.csail.mit.edu/nhm/thesis.pdf
> https://en.wikipedia.org/wiki/Billiard-ball_computer
> https://en.wikipedia.org/wiki/Digital_philosophy
> https://en.wikipedia.org/wiki/Digital_physics#Pancomputationalism
>
>
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