If Boltzmann had a brain like Trump,
It'd bluster, it'd brag, it'd thump -
"All entropy’s fake,
A Dem hoax, a mistake!"
Then collapse in a hot, noisy lump.

#limerick
#BoltzmannBrain

More people writing/talking about organic molecules in space as if it’s a new idea.

But I wonder ... if a given volume of spacetime has a simple organic molecule in it — glycine, say, as compared to just an atom of hydrogen — does that increase the probability of the occurrence of a #BoltzmannBrain round it and perhaps increase its durability?  Long enough to write a microblog post perhaps? 🤔

Maybe that just happened?

Has anyone tried to quantify this?

#physics #virtualBiology #askFedi

@kentpitman

Yes, The #BoltzmannBrain hypothesis is refuted by evidence. Just look out of a window and you see the entire world NOT collapsing into nothing in a nanosecond. But it is a useful probe regarding probability and how we should think about it, especially in the context of #Cosmology.

Ken Olum - What Can't be Predicted in Physics?

YouTube
Sean Carroll - The Physics of Eternity

YouTube
The Boltzmann brain paradox - Fabio Pacucci

YouTube
What Would an Infinite Cosmos Mean? | Episode 1107 | Closer To Truth

YouTube
Seth Lloyd - The Physics of Eternity

YouTube

I was just re-reading "Why Boltzmann Brains Are Bad", by Sean Carroll [1]. There Carroll notes (on page 13) that

"There is a possibility of confusion here, due to the sloppy way in which physicists use the word “quantum fluctuation.” It’s helpful to distinguish between three different notions [44]."

Indeed. 🙂 #physics #boltzmannbrain

References
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[1] "Why Boltzmann Brains Are Bad", https://arxiv.org/pdf/1702.00850.pdf

[2] "Is The Boltzmann Brain Theory Plausible?", https://medium.com/@amesett/is-the-boltzmann-brain-theory-plausible-85cf7b776c6d