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fbusc
@quantumquia@poliversity.it  ·  activity timestamp 6 days ago

È divertentissimo leggere E.T. Jaynes, in particolare i suoi ultimi lavori. Questo passaggio è da "The Gibbs Paradox". Si può scaricare qui.

There is a school of thought which militantly rejects all attempts to point out the close relation between entropy and information, claiming that such considerations have nothing to do with energy; or even that they would make entropy subjective and it could therefore have nothing to do with experimental facts at all. We would observe, however, that the number of fish that you can catch is an objective experimental fact; yet it depends on how much subjective information you have about the behavior of fish.

Traduzione in italiano:

Esiste una corrente di pensiero che respinge con forza ogni tentativo di evidenziare la stretta relazione tra entropia e informazione, sostenendo che tali considerazioni non abbiano nulla a che fare con l’energia; o persino che renderebbero l’entropia soggettiva, e che quindi non potrebbe avere alcun legame con i fatti sperimentali. Osserviamo, tuttavia, che il numero di pesci che si possono catturare è un fatto sperimentale oggettivo; eppure dipende da quanta informazione soggettiva si possiede sul comportamento dei pesci.

#SecondLaw #SecondaLegge #Jaynes #Entropy #Fisica #Termodinamica #Thermodynamics

@fisica
@scienze

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fbusc
@quantumquia@poliversity.it  ·  activity timestamp 6 days ago

È divertentissimo leggere E.T. Jaynes, in particolare i suoi ultimi lavori. Questo passaggio è da "The Gibbs Paradox". Si può scaricare qui.

There is a school of thought which militantly rejects all attempts to point out the close relation between entropy and information, claiming that such considerations have nothing to do with energy; or even that they would make entropy subjective and it could therefore have nothing to do with experimental facts at all. We would observe, however, that the number of fish that you can catch is an objective experimental fact; yet it depends on how much subjective information you have about the behavior of fish.

Traduzione in italiano:

Esiste una corrente di pensiero che respinge con forza ogni tentativo di evidenziare la stretta relazione tra entropia e informazione, sostenendo che tali considerazioni non abbiano nulla a che fare con l’energia; o persino che renderebbero l’entropia soggettiva, e che quindi non potrebbe avere alcun legame con i fatti sperimentali. Osserviamo, tuttavia, che il numero di pesci che si possono catturare è un fatto sperimentale oggettivo; eppure dipende da quanta informazione soggettiva si possiede sul comportamento dei pesci.

#SecondLaw #SecondaLegge #Jaynes #Entropy #Fisica #Termodinamica #Thermodynamics

@fisica
@scienze

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jbz
@jbz@indieweb.social  ·  activity timestamp last week

🧠 Boltzmann Brains: The Terrifying Physics Paradox That Says You Aren't Real

https://youtube.com/watch?v=rc8f5MNVino

#boltzmannbrain #physics #paradox #entropy

Boltzmann Brains: The Terrifying Physics Paradox That Says You Aren't Real
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James Endres Howell
@jameshowell@fediscience.org  ·  activity timestamp last month

This very Buddhist idea of no boundaries between you and the "surroundings." This very Buddhist idea that "life" requires, is co-equal and identical to, this planetary system. Including the sun and the moon!

Two of the ideas that are "subtle" and "non-intuitive" to the modern Western mind, but in themselves self-evident and trivial. My favorite catchphrase, maybe the best of the two or three possibly original thoughts I have ever had, is:

"Ecology is economics without externalities."

(Or surpluses, but alliteration. Also tautology. Anyway.)

#biology #evolution #gaia

James Endres Howell
@jameshowell@fediscience.org replied  ·  activity timestamp last month

My buddy, a dev, complained that code he wrote on a server that is still live no longer works. No staff or funding, so it'll never work again.

A "program," a self-contained selection of source code, is self-contained in only the most artificial, abstract, and banally false sense. Ask any curator of a computer museum. Ask any contemporary librarian. Ask the guy whose thankless job is to deal with Andy Warhol's Amiga artefacts.

The effort required to make something work from ten or twenty years ago may not even have a path to success.

#biology #bitrot #gaia #entropy

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