Comment by jsrozner

Comment by jsrozner 20 hours ago

44 replies

I wouldn't call it "accumulation of cognitive debt"; just call it cognitive decline, or loss of cognitive skills.

And also DUH. If you stop speaking a language you forget it. The brain does not retain information that it does not need. Anybody remember the couple studies on the use of google maps for navigation? One was "Habitual use of GPS negatively impacts spatial memory during self-guided navigation"; another reported a reduction in gray matter among maps users.

Moreover, anyone who has developed expertise in a science field knows that coming to understand something requires pondering it, exploring how each idea relates to other things, etc. You can't just skim a math textbook and know all the math. You have to stop and think. IMO it is the act of thinking which establishes the objects in our mind such that they can be useful to our thinking later on.

vishnugupta 20 hours ago

> You can't just skim a math textbook and know all the math. You have to stop and think.

And most importantly you have to write. A lot. Writing allows our brain to structure our thinking. Enables us to have a structured dialogue with ourselves. Explore different paths. Thinking & pondering can only do so much and will reach the limits soon. Writing, on the other hand enables one to explore thoughts nearly endlessly.

Given that thinking is so intimately associated with writing (could be prose, drawing, equations, graphs/charts, whatever) and that LLMs are doing more and more of writing it'll be interesting to see the effect of LLMs on our cognitive skills.

  • larodi 19 hours ago

    The impact of writing is immensely undervalued. Even writing with a keyboard or screen is a lot more than non writing. Exercising writing on any topic is still beneficial, and you can find many psychologists recommend having a daily blog of some sort to help people observe themselves from a side. The same goes for speaking, public speech if u want, and therapeutic daily acting-playing which is also overlooked.

    I’d love to see some sort of study on people who actively particulate writing their stuff on social media and those who don’t.

    If u want to spare your mind from GPT numbness - write or copy what it tells you to do by hand, do not abandon this process.

    Or just write code, programs, essays, poems for fun. Trust me - it is and you’ll get smarter and more confident. GPT is a very dangerous convenience gadget, is not going away like sugar or Netflix, or obesity or long commutes … but similarly dosage and counter measures are essential to cope with the side-effects.

    • QuantumGood 3 hours ago

      Similarly, the impact of white-boarding-type activities is undervalued. When discussing problems with a viewpoint, a quick whiteboard usually gets at some easy-to-find underlying issues that others can understand, rather than it devolving into positional framings.

    • ToucanLoucan 12 hours ago

      The only writing I've ever used ChatGPT for is writing I openly don't give a shit about, and even then I constantly find myself prompting it to write less because holy shit do LLMs love to go on and on and on.

      Like not only do I cosign all said above, but I will also add to this: brevity is the soul of wit and none of these fucking things are brief. No matter what you ask for you end up getting just paragraphs of shit to communicate even basic ideas. It's hard to not think this tool was designed from go to automate high school book reports.

      I would only use these programs to either create these overly long, meandering stupid emails, or to digest ones similarly sent to me, and make a mental note to reduce my interactions with this person.

      It's no wonder the MBA class is fucking thrilled with it though, since the vast majority of their jobs seem to revolve around producing and consuming huge reports containing vacuously little.

  • supriyo-biswas 19 hours ago

    > And most importantly you have to write. A lot. Writing allows our brain to structure our thinking.

    There's a lot of talk about AI assisted coding these days, but I've found similar issues where I'm unable to form a mental model of the program when I rely too much on them (amongst other issues where the model will make unnecessary changes, etc.). This is one of the reasons why I limit their use to "boring" tasks like refactoring or clarifying concepts that I'm unsure about.

    > it'll be interesting to see the effect of LLMs on our cognitive skills.

    These discussions remind me a lot about this comic[1].

    [1] https://www.monkeyuser.com/2023/deprecated/

  • tom_m 29 minutes ago

    They made a documentary about this actually. You can probably find it on Netflix or something. It's called Idiocracy.

  • fatnoah 13 hours ago

    > And most importantly you have to write. A lot. Writing allows our brain to structure our thinking. Enables us to have a structured dialogue with ourselves.

    I feel like to goes beyond writing to really any form of expressing this knowledge to others. As a grad student, I was a teaching assistant for an Electrical Engineering class I failed as an undergrad. The depth of understanding I developed for the material over the course of supporting students in the class was amazing. I transitioned from "knowing" the material and equations to being able to generate them all from first principles.

    Regardless, I fully agree that using LLMs as our form of expression will weaken both the ability to express ourselves AND the ability to develop deep understanding of topics as LLMs "think" for us too.

  • p_v_doom 16 hours ago

    Writing is pure magic.It allows so much reflection and so many insights, that you wouldnt otherwise get. And writing as part of the reading process allows you to directly integrate what you are reading as you are doing it. Like cant recommend it enough. Only downside is that its slow, compared to what people are used and want to do, especially in the work environment.

  • Davidzheng 19 hours ago

    I disagree with this take. I'd say often when exploring new math problems, often it's possible explore the possible solutions paths at lower technical levels first in your mind before anything down--when actually going into details of an approach. I don't think not writing is that limiting if all of your approaches already fail before going into details, which is often the case in early stages of math research.

    • hamdouni 19 hours ago

      I can also explore by writing. Writing drafts can help structure my thinking.

      • hyper57 18 hours ago

        "The pen is an instrument of discovery rather than just a recording implement." ~ Billy Collins

  • Aeolun 19 hours ago

    > And most importantly you have to write. A lot.

    I find this to still be true with AI assisted coding. Especially when I still have to build a map of the domain.

  • dr_dshiv 18 hours ago

    Prompting involves more than an insignificant amount of writing.

    • delusional 18 hours ago

      But it is not at all the same _type_ of writing. Most of the prompts I've seen and written are shorter, less organized, and most importantly not actually considered a piece of writing. When you are writing a prompt you are considering how the machine will "interpret" it and what it will spit back, you're not constructing and argument. Vagueness or dialectics in a prompt will often just confuse the machine.

      Hitting the keys is not always writing.

      • dr_dshiv 18 hours ago

        Prompting is prewriting — which is very important and often neglected. With it, you are:

        * Describing the purpose of the writing

        * Defining the format of the writing

        * Articulating the context

        You are writing to figure out what you want.

teekert 18 hours ago

I would call it cognitive debt. Have you ever tried writing a large report with an LLM?

It's very tempting to let it write a lot, let it structure things, let it make arguments and visuals. It's easy to let it do more and more... And then you end up with something that is very much... Not yours.

But your name is on it, you are asked to explain it, to understand it even better than it is written down. Surely the report is just a "2D projection" of some "high dimensional reality" that you have in you head... right? Normally it is, but when you spit out a report in 1/10th of the time it isn't. You struggle to explain concepts, even though they look nice on paper.

I found that I just really have to do the work, to develop the mental models, to articulate and to re-articulate and re-articulate again. For different audiences in different ways.

I like the term cognitive debt as a description of the gap between what mental models one would have to develop pre-LLMs to get a report out, and how little you may need with an LLM.

In the end it is your name on that report/paper, what can we expect of you, the author? Maybe that will start slipping and we start expecting less over time? Maybe we can start skipping authors altogether and rely on the LLM's "mental" model when we have in depth questions about a report/paper... Who knows. But different models (like LLMs) may have different "models" (predictive algorithms) of underlying truth/reality. What allows for most accurate predictions? One needs a certain "depth of understanding". Writing while relying too much on LLMs will not give it to you.

Over time indeed this may lead to a population "cognitive decline, or loss of cognitive skills." I don't dare to say that. Book printing didn't do that, although it was expected at the time by the religious elite, they worried that normal humans would not be able to interpret texts correctly.

As remarked here in this thread before, I really do think that "Writing is thinking" (but perhaps there is something better than writing which we haven't invented yet). And thinking is: Developing a detailed mental model that allows you to predict the future with a probability better than chance. Our survival depends on it, in fact it is what evolution is in terms of information theory [0]. "Nothing in biology makes sense except in the light of ... information."

[0] https://www.youtube.com/watch?v=4PCHelnFKGc

  • chubot 8 hours ago

    I found that I just really have to do the work, to develop the mental models, to articulate and to re-articulate and re-articulate again. For different audiences in different ways

    Yes definitely!

    I'd say that being able to turn an idea over in your head is how you know if you know it ... And even pre-LLM, it was easy to "appear to know" something, but not really know it.

    PG wrote pretty much this last year:

    in a couple decades there won't be many people who can write.

    So a world divided into writes and write-nots is more dangerous than it sounds. It will be a world of thinks and think-nots.

    https://paulgraham.com/writes.html

pilif 19 hours ago

> The brain does not retain information that it does not need.

Why do I still know how to optimize free conventional memory in DOS by configuring config.sys and autoexec.bat?

I haven’t done this in 2 decades and I’m reasonably sure I never again will

  • dotancohen 19 hours ago

    Probably because you learned it during that brief period in your development in which humans are most impressionable.

    Now think about the effect on those humans currently using LLMs at that stage of their development.

  • fennecfoxy 15 hours ago

    The last fast food place you went to, what does the ceiling look like? The exact colour/pattern?

    The last phone conversation you had with a utility company, how did they greet you exactly?

    There's lots that we do remember, sometimes odd things like your example, though I'm sure you must have repeated it a few times as well. But there's so much detail that we don't remember at all, and even our childhood memories just become memories of memories - we remember some event, but we slowly forget the exact details, they become fuzzy.

  • reciprocity 10 hours ago

    I also think the claim that "the brain does not retain information it does not need" is an insufficient explanation, and short-sighted. As an example, reading books informs and shapes our thinking, and while people may not immediately recall a book that they read some time ago, I've had conversations where I remembered that I had read a particular passage (sentence, phrase, idea) and referred to it in the conversation.

    People do stuff like that all the time, bringing up past memories in spontaneity. The brain absolutely does remember things it "doesn't need".

  • nottorp 17 hours ago

    To nitpick, your subconscious is aware computers have memory constraints even now and you write better code because of it even if you do javascript...

  • rusk 19 hours ago

    Because these are core memories that provide stepping stones to later knowledge. It is a part of the story of you. It is very hard to integrate all knowledge in this way.

  • 15123123 19 hours ago

    I think because some experiences are so profound to your brain ( first impression, moments that you are proud of ) that you just replay them over and over again.

  • flomo 18 hours ago

    Probably because there was some reward that you felt at the time was important (most likely playing a DOS game).

    I did this for a living at a large corp where I was the 'thinkpad guy', and I barely remember any of the tricks (and only some of the IBM stuff). Then Windows NT and 95 came out and like whoo cares... This was always dogshit. Because I was always an Apple/Unix guy and that was just a job.

  • lelele 18 hours ago

    Agreed. We remember many things that don't serve us anymore.

  • Delphiza 12 hours ago

    memmaker - a cheat, but it is still in my quick-access memory.

this_steve_j 15 hours ago

The terms “Cognitive decline” or “brain rot” may have sounded too sensational, and to be fair the authors note the limitations of the small sample size.

Indeed the paper doesn’t provide a reference or citation for the term “cognitive debt” so it is a strange title. Maybe a last minute swap.

Fascinating research out of MIT. Like all psychology studies it deserves healthy scrutiny and independent verification. Bit of a kitchen sink with the imaging and psychometric assessments, but who doesn’t love a picture of “this is your brain on LLMs” amirite?

eru 20 hours ago

> The brain does not retain information that it does not need.

Sounds very plausible, though how does that square with the common experience that certain skills, famously 'riding a bike', never go away once learned?

  • wahern 19 hours ago

    Closer to the truth is that the brain never completely forgets something, in the sense that there are always vestiges left over, even after the ability to recall or instantly draw upon it is long gone. Studies show, for example, that after one has "forgotten" a language, they're quicker to pick up it again later on compared to someone without that prior experience; how quickly being time dependent, but more quickly nonetheless.

    OTOH, IME the quickest way to truly forget something is to overwrite it. Photographs being a notorious example, where looking at photographs can overwrite your own personal episodic memory of an event. I don't know how much research exists exploring this phenomenon, though, but AFAIU there are studies at least showing that the mere act of recalling can reshape memories. So, ironically, perhaps the best way not to forget is to not remember.

    Left unstated in the above is that we can categorize different types of memory--episodic, semantic, implicit, etc--based on how they seem to operate. Generalizations (like the above ;) can be misleading.

  • gwd 16 hours ago

    I think a better way to say it is that the brain doesn't commit to long term memory things that it doesn't need.

    I remember hearing about some research they'd done on "binge watching" -- basically, if you have two groups:

    1. One group watches the entire series over the course of a week

    2. A second group watches a series one episode per week

    Then some time later (maybe 6 months), ask them questions about the show, and the people in group 2 will remember significantly more.

    Anecdotally, I've found the same thing with Scottish Country Dancing. In SCD, you typically walk through a dance that has 16 or so "figures", then for the next 10 minutes you need to remember the figures over and over again from different perspectives (as 1st couple, 2nd couple, 3rd couple etc). Fairly quickly, my brain realized that it only needed to remember the figures for 10 minutes; and even the next morning if you'd asked me what the figures were for a dance the night before I couldn't have told you.

    I can totally believe it's the same thing with writing with an LLM (or having an assistant write a speech / report for you) -- if you're just skimming over things to make sure it looks right, your brain quickly figures out that it doesn't need to retain this information.

    Contrast this to riding a bike, where you almost certainly used the skill repeatedly over the course of at least a year.

  • KineticLensman 14 hours ago

    > Sounds very plausible, though how does that square with the common experience that certain skills, famously 'riding a bike', never go away once learned?

    I worked with some researchers who specifically examined this when developing training content for soldiers. They found that 'muscle memory' skills such as riding a bike could persist for a very long time. At the other end of the spectrum were tasks that involved performing lots of technical steps in a particular order, but where the tasks themselves were only performed infrequently. The classic example was fault finding and diagnosis on military equipment. The researchers were in effect quantifying the 'forgetting curve' for specific tasks. For some key tasks, you could overtrain to improve the competence retention, but it was often easier to accept that training would wear off very quickly and give people a checklist instead.

    • eru 11 hours ago

      Very interesting! Thanks for bringing this up.

  • pempem 20 hours ago

    Such a good question - I hope someone answers with more than an anecdote (which is all I can provide) - I've found the skills that don't leave you like riding a bike, swimming, cooking are all physical skills. Tangible.

    The skills that leave: arguments, analysis, language, creativity often seem abstract and primarily if not exclusively sourced in our minds

    • hn_throwaway_99 19 hours ago

      Google "procedural memory". Procedural memory is more resistant to forgetting than other types of memory.

      • eru 19 hours ago

        I guess speaking a language employs some mixture of procedural and other types of memory?

  • rusk 19 hours ago

    Riding a bike is a skill rather than what we would call a “memory” per se. It’s a skill that develops a new neural pathway throughout your extended nervous system bringing together the lesser senses of proprioception and balance. Once you bring these things together you then go on to use them for other things. You “know” (grok), rather than “understand” how a bike stays upright on a very deep physical level.

    • eru 19 hours ago

      Sure. But speaking a language is also (at least partially) a skill, ain't it?

      • rusk 18 hours ago

        It is. It’s also something you don’t forget except in extreme cases like dementia. Skills are different from facts but we use the word memory interchangeably for each. It’s this nuance of language that causes a category error in your reasoning ain’t it.

  • devmor 11 hours ago

    I am not an expert in the subject but I believe that motor neurons retain memory, even those not located inside the brain. They may be subject to different constraints than other neurons.

jancsika 19 hours ago

> And also DUH. If you stop speaking a language you forget it. The brain does not retain information that it does not need.

Except when it does-- for example in the abstract where it is written that Brain-to-LLM users "exhibited higher memory recall" than LLM and LLM-to-Brain users.

amelius 12 hours ago

> You can't just skim a math textbook and know all the math.

Curious, did anyone try to learn a subject by predicting the next token, and how did it go?

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