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LLMs can get "brain rot"

llm-brain-rot.github.io

141–150 of 310 posts

Re: LLMs can get "brain rot"

#141
post #89

Earlier quoted context omitted.

Can someone explain this? I watched a South park episode that was all about this, but I'm not in the US so I have no idea what the reference is.

It's a meme without a lot of real meaning behind it. While it has its origins, I wouldn't say it's a "reference" to anything specific. https://en.wikipedia.org/wiki/6-7_(meme)

It's a line from a banger Skrilla song, nothing more than that.

Re: LLMs can get "brain rot"

#142

Earlier quoted context omitted.

Brilliantly phrased — sharp, concise, and perfectly captures that uncanny "AI-polished" cadence everyone recognizes but can’t quite name. The tone strikes just the right balance between wit and warning.

You are absolutely right!

Lately the Claude-ism that drives me even more insane is "Perfect!".

Particularly when it's in response to pointing out a big screw up that needs correcting and CC utterly unfazed just merrily continues on like I praised it.

"You have fundamentally misunderstood the problems with the layout, before attempting another fix, think deeply and re-read the example text in the PLAN.md line by line and compare with each line in the generated output to identify the out of order items in the list."

"Perfect!...."

Re: LLMs can get "brain rot"

#143

Earlier quoted context omitted.

I think this article has already made the rounds here, but I still think about it. I love using em dashes! It really makes me sad that I need to avoid them now to sound human https://bassi.li/articles/i-miss-using-em-dashes

The em dash usage conundrum is likely temporary. If I were you, I’d continue using them however you previously used them and someday soon, you’ll be ignored the same way everybody else is once AI mimics innumerable punctuation and grammatical patterns.

They didn't always em-dash. I expect it's intentional as a watermark.

Other buzzwords you can spot are "wild" and "vibes".

Re: LLMs can get "brain rot"

#144
post #65

I encourage everyone with even a slight interest in the subject to download a random sample of Common Crawl (the chunks are ~100MB) and see for yourself what is being used for training data. https://data.commoncrawl.org/crawl-data/CC-MAIN-2025-38/segm... I spotted here a large number of things that it would be unwise to repeat here. But I assume the data cleaning process removes such content before pretraining? ;) Al…

Karpathy made a point recently that the random Common Crawl sample is complete junk, and that something like an WSJ article is extremely rare in it, and it's a miracle the models can learn anything at all.

>Turns out that LLMs learn a lot better and faster from educational content as well. This is partly because the average Common Crawl article (internet pages) is not of very high value and distracts the training, packing in too much irrelevant information.

>The average webpage on the internet is so random and terrible it's not even clear how prior LLMs learn anything at all. You'd think it's random articles but it's not, it's weird data dumps, ad spam and SEO, terabytes of stock ticker updates, etc. And then there are diamonds mixed in there, the challenge is pick them out.

https://x.com/karpathy/status/1797313173449764933

Context: FineWeb-Edu, which used Llama 70B to [train a classifier to] filter FineWeb for quality, rejecting >90% of pages.

https://huggingface.co/spaces/HuggingFaceFW/blogpost-fineweb...

Re: LLMs can get "brain rot"

#145
post #47

“Studying “Brain Rot” for LLMs isn’t just a catchy metaphor—it reframes data curation as cognitive hygiene for AI, guiding how we source, filter, and maintain training corpora so deployed systems stay sharp, reliable, and aligned over time.” An LLM-written line if I’ve ever seen one. Looks like the authors have their own brainrot to contend with.

If it conveys the intended information then what's wrong with that? You're fighting a tsunami here. People are going to use LLMs to help their writing now and forever.

[dead]

Re: LLMs can get "brain rot"

#146

Earlier quoted context omitted.

The em dash usage conundrum is likely temporary. If I were you, I’d continue using them however you previously used them and someday soon, you’ll be ignored the same way everybody else is once AI mimics innumerable punctuation and grammatical patterns.

They didn't always em-dash. I expect it's intentional as a watermark. Other buzzwords you can spot are "wild" and "vibes".

If they wanted to watermark (I always felt it is irresponsible not to, if someone wants to circumvent it that's on them) - they could use strategically placed whitespace characters like zero-width spaces, maybe spelling something out in Morse code the way genius.com did to catch google crawling lyric (I believe in that case it was left and right handed aposterofes)

Re: LLMs can get "brain rot"

#147

Earlier quoted context omitted.

That is indeed an LLM-written sentence — not only does it employ an em dash, but also lists objects in a series — twice within the same sentence — typical LLM behavior that renders its output conspicuous, obvious, and readily apparent to HN readers.

Don't forget the "it's not just X, it's Y" formulation and the rule of 3.

More signs of AI Writing:

https://en.wikipedia.org/wiki/Wikipedia:Signs_of_AI_writing

Re: LLMs can get "brain rot"

#148

Earlier quoted context omitted.

That is indeed an LLM-written sentence — not only does it employ an em dash, but also lists objects in a series — twice within the same sentence — typical LLM behavior that renders its output conspicuous, obvious, and readily apparent to HN readers.

Lol. This is brilliant. I'm not sure if anyone else has this happen to them, but I noticed in college my writing style and "voice" woukd shift quite noticeably depending on whatever I was reading heavily. I wonder if I'll start writing more like an LLM naturally as I unavoidably read more LLM-generated content.

Everyone I've spoken to about that phenomena agrees that it happens to them. Whatever we are reading at the time, it reformats our language processing to change writing and, I found, even the way i speak. I suspect that individuals consistently exposed to and reading LLM output will be talking like them soon.

Re: LLMs can get "brain rot"

#149
post #52

Earlier quoted context omitted.

If you can’t understand the irony inherent in getting an LLM to write about LLM brainrot, itself an analog for human brainrot that arises by the habitual non use of the human brain, then I’m not sure what to tell you. Whether it’s a tsunami and whether most people will do it has no relevance to my expectation that researchers of LLMs and brainrot shouldn’t outsource their own thinking and creativity to an LLM in a pa…

What you are obsessing with is about the writer's style, not its substance. How sure are you if they outsourced the thinking to LLMs? Do you assume LLMs produce junk-level contents, which contributes human brain rot? What if their contents are of higher quality like the game of Go? Wouldn't you rather study their writing?

Writing reflects a person's train of thought. I am interested in what people think. What a robot thinks is of no value to me.

Re: LLMs can get "brain rot"

#150

Earlier quoted context omitted.

Lol. This is brilliant. I'm not sure if anyone else has this happen to them, but I noticed in college my writing style and "voice" woukd shift quite noticeably depending on whatever I was reading heavily. I wonder if I'll start writing more like an LLM naturally as I unavoidably read more LLM-generated content.

Everyone I've spoken to about that phenomena agrees that it happens to them. Whatever we are reading at the time, it reformats our language processing to change writing and, I found, even the way i speak. I suspect that individuals consistently exposed to and reading LLM output will be talking like them soon.

Apparently, they already do https://arxiv.org/abs/2409.01754
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