/AI17h ago

Neuroscientist Reports Shockingly Poor Evidence For Generative World Models In Mammalian Brain

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Roei Herzig@roeiherzig

Jack Gallant (UC Berkeley), in his talk “Representation of the World in the Human Brain,” made a really interesting observation about world models: evidence that the mammalian brain implements a Generative World Model is "shockingly poor".

9:53 AM · Jun 8, 2026 · 18.6K Views
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Many users appreciate the neuroscientist's claim of shockingly poor evidence for mammalian generative world models and praise him as ahead of his time, while some dismiss the post as self-promotion.

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Roei Herzig@roeiherzig

"Generative World Models are highly correlated with other theories."

Isn’t that expected, given that the laws of nature apply to humans as well?

17hViews 1.2KLikes 18Bookmarks 3
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Roei Herzig@roeiherzig

Cool!

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Amir Arsalan Soltani@Amir_Arsalan_

@roeiherzig So was his "finding" (or lack thereof) mean that we shouldn't look for it either? 😅 And therefore all of our brain is a discriminative machine?

I should tell him to read out paper, as a slightly stronger piece of evidence :) https://www.nature.com/articles/s41562-023-01759-7

7hViews 245Bookmarks 1
stochasm@stochasticchasm

@roeiherzig is there a video of this

14hViews 834Likes 6Bookmarks 1
Lakshay Sagar Rana@lsrspeakstocomp

@stochasticchasm @roeiherzig here: https://www.youtube.com/live/cFwHAMf0kEc?si=63v85Cp_tnNt1aNh

4hViews 29Likes 2Bookmarks 1
Lakshay Sagar Rana@lsrspeakstocomp

@roeiherzig Relevant: https://aeon.co/essays/your-brain-does-not-process-information-and-it-is-not-a-computer

4hViews 86Likes 2
Arturo Deza@ArtDeza

@roeiherzig Jack Gallant, always one step ahead of his time!

6hViews 191Likes 1
Thomas@DomaOrut

@Amir_Arsalan_ @roeiherzig cant go on for 1 minute on science twitter without someone plugging their shit

6hViews 22Likes 1
Sonny George@s_george_iv

@roeiherzig Thanks for sharing!

13hViews 34