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Rodney Brooks on GPT-4

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381–390 of 412 posts

Re: Rodney Brooks on GPT-4

#381

Earlier quoted context omitted.

> Would it learn the fundamentals of music theory? No, but you might convince yourself it did. It would map the patterns that exist in its training set. It would then follow those patterns. The result would look like a human understanding music theory, but it would not be that . It would be stumbling around exactly the domain we gave it: impressive because that domain is not noise, it's good data. It still wouldn't b…

> The result would look like a human understanding music theory, but it would not be that. The question then becomes, what is understand? Is what a human does any different than what this LLM is doing?

Objectivity.

A human can do something with the model. An LLM can only present the model to you.

Re: Rodney Brooks on GPT-4

#382

Earlier quoted context omitted.

> The result would look like a human understanding music theory, but it would not be that. The question then becomes, what is understand? Is what a human does any different than what this LLM is doing?

Objectivity. A human can do something with the model. An LLM can only present the model to you.

Not sure how that's any different than a model doing something with another model, as in AutoGPT. What part is objective? A model can be wrong just like a human can be wrong or spread falsehoods too.

Re: Rodney Brooks on GPT-4

#383
post #289

Earlier quoted context omitted.

text and language intersect. in some ways, text is a superset of language, mostly due to social, or what is also called pragmatic, factors that complement semantics. also, the semantics/syntax interface is everything else than clear cut, at least in natural human languages.

That relationship seems backwards to me... Any text corpus is a subset of the language, under the normal definition that a language is the set of all possible sentences (or a set of rules to recognize or generate that set of possibilities). This text subset has an intrinsic bias as to which sentences were selected to represent real language use, which would be significant as a training set for an ML model. So, perhap…

regarding the relationship: yes, and in most ways it probably is a subset. is there really such a set of rules that generate all possible sentences? in any case i wanted to say the materiality and cultural activity heavily influences what can and will be put into text and that is not strictly language. "selection process" might capture some, though i'm not sure whether all of it!

Re: Rodney Brooks on GPT-4

#384

Earlier quoted context omitted.

The brain does a lot of hierarchical prediction with sense data. When new information comes in, it references "something" and adjusts the sense data likewise. That's why when you shift your eyes quickly, you see blurred images pass by. In reality, you should be seeing complete black because the brain doesn't actually process visual information that shifts so quickly. But your brain "knows" it should see...well someth…

It always seemed sensible to me that we are looking at a dreamlike construction all the time, not just holes filled in but literally everything you see is made up, but grounded in sensory data (when not psychotic or dreaming). This also nicely explains the clarity and realism of lucid dreaming, because it’s just doing whatever you are doing during the day but without (external) grounding sensory data.

> but without (external) grounding sensory data.

Or perhaps with external data that is normally surpressed by data that comes through sensory organs (e.g. other parts of EM spectrum).

Re: Rodney Brooks on GPT-4

#385

Earlier quoted context omitted.

Do you know what a "world model" is? It's a thing people were assumed to have in 1970s psychology, but was never well-defined enough to tell if it exists or not, so I don't think it's obvious anything else has one. https://twitter.com/Meaningness/status/1639120720088408065 I think "common sense" or "long term memory" might be more productive things to say.

The brain does a lot of hierarchical prediction with sense data. When new information comes in, it references "something" and adjusts the sense data likewise. That's why when you shift your eyes quickly, you see blurred images pass by. In reality, you should be seeing complete black because the brain doesn't actually process visual information that shifts so quickly. But your brain "knows" it should see...well someth…

> That "something" being referenced is a world model.

It doesn't need to be a whole understanding of the nearby world to build an image. Basically it's an event camera (https://en.wikipedia.org/wiki/Event_camera) and just needs to integrate recent visual "samples".

But if you do need to understand objects near you in detail (say, to move them), you don't do it just by looking. You investigate them by moving closer to them, picking them up, etc. If you need to "create a world model", then it's an activity rather something your senses just do.

Re: Rodney Brooks on GPT-4

#386

Earlier quoted context omitted.

> It has a net of lines of meanings of all concepts we fed it that give it the ability that it has, without actually understanding. I'm increasingly convinced this is what understanding fundamentally is.

That conflates perception with perceiver. LLMs have only internalized [/encoded] our perceptions and expressions. From a model of the mind pov, the 'self' that we sense has an internal LLM-like tool . And it is that self that understands and not the tool.

> That conflates perception with perceiver.

I'm not sure I understand. Can you elaborate?

> From a model of the mind pov, the 'self' that we sense has an internal LLM-like tool. And it is that self that understands and not the tool.

I'm starting to think it's the other way around. I think it's somewhat widely accepted that our brains do most of the "thinking" and "understanding" unconsciously - our conscious self is more of an observer / moderator, occasionally hand-holding the thought process when the topic of interest is hard, and one isn't yet proficient[0] in it.

Keeping that in mind, if you - like me - feel that LLMs are best compared to our "inner voice", i.e. the bit on the boundary between conscious and unconscious that uses language as an interface to the former, then it's not unreasonable to expect that LLMs may, in fact, understand things. Not emulate, but actually understand.

The whole deal with a hundred thousand dimensional latent space? I have a growing suspicion that this is exactly the fundamental principle behind how understanding, thinking in concepts, and thinking in general works for humans too. Sure, we have multiple senses feeding into our "thinking" bit, but that doesn't change much.

At a conceptual, handwavy level (I don't know the actual architecture and math details well enough to offer more concrete explanations/stories), I feel there are too many coincidences to ignore.

Is this coincidence that someone trained an LLM and an image network, and found their independently learned latent spaces map to each other with a simple transforms? Maybe[1], but this also makes sense - both network segmented data about the same view of reality humans have. There is no reason for LLMs to have an entirely different way of representing "understanding" than img2txt or txt2img networks.

Assuming the above is true, is this coincidence that it offers a decent explanation for how humans developed language? You start with a image/sound/touch/other senses acquisition and association system forming a basic brain. Predicting next sensations, driving actions. As it evolves in size and complexity, dimensionality of its representation space grows, and at some point, the associations cluster in something of a world model. Let evolution iterate some (couple hundred thousand years) more, and you end up with brains that can build more complex world model, working with more complex associations (e.g. vibration -> sound -> tone -> grunt -> phrase/song). At this level, language seems like an obvious thing - it's taking complex associations of basic sensory input, and associating them wholesale with different areas of the latent space, so that e.g. a specific grunt now associates with danger, a different one with safety, etc. and once you have brains being able to do that naturally, it's pretty much straight line to a proper language.

Yes, this probably comes as a lot of hand-waving; I don't have the underlying insights properly sorted yet. But a core observation I want to communicate, and recommend people to ponder on, is continuity. This process gains capabilities in a continuous fashion, as it scales - which is exactly a kind of system you'd expect evolution to lock on to.

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[0] - What is "proficiency" anyway? To me, being proficient in a field of interest is mostly about... shifting understanding of that field to unconscious level as much as possible.

[1] - This was one paper I am aware of; they probably didn't do good enough control, so it might turn out to be happenstance.

Re: Rodney Brooks on GPT-4

#387
post #327

Earlier quoted context omitted.

> It has a net of lines of meanings of all concepts we fed it that give it the ability that it has, without actually understanding. I'm increasingly convinced this is what understanding fundamentally is.

Yeah, I guess you could see it that way. Object Symbolism (aka words, thoughts, concepts, art) Meaning. Meaning is knowing how an object relates to others. Language is a kind of information web already, where each word is a hyperlink into meaning.

This is a new idea that I had (or at least consciously noticed) for the first time a few days ago, but - I really don't think the meaning is in words. The words/terms themselves are more like information-free[0] points. The meaning is entirely determined by links. This works, because the links eventually lead you to ground truth - sensory inputs.

Re: Rodney Brooks on GPT-4

#388

Earlier quoted context omitted.

Objectivity. A human can do something with the model. An LLM can only present the model to you.

Not sure how that's any different than a model doing something with another model, as in AutoGPT. What part is objective? A model can be wrong just like a human can be wrong or spread falsehoods too.

A model can't be right or wrong, because it doesn't actually make any logical decisions.

These are categorizations that we make after the fact. If the model could do the same categorization work, then it could actively choose correct over incorrect.

Re: Rodney Brooks on GPT-4

#389

Earlier quoted context omitted.

Not sure how that's any different than a model doing something with another model, as in AutoGPT. What part is objective? A model can be wrong just like a human can be wrong or spread falsehoods too.

A model can't be right or wrong, because it doesn't actually make any logical decisions. These are categorizations that we make after the fact. If the model could do the same categorization work, then it could actively choose correct over incorrect.

Models could potentially make logical decisions too, if we connect them to something like a classical computer or a rules engine. I don't see any fundamental barriers to making models and computers in general similar to humans' way of understanding and reasoning too.

Re: Rodney Brooks on GPT-4

#390
post #38

Earlier quoted context omitted.

The more I think about it the more I'm convinced I am basically just predicting/saying my next word whenever I speak.

Does that reasoning work when applied to what you just wrote? If you’re just predicting the next word, then what makes you confident in the conclusion that you’re just predicting your next word?

Yes. This was my second draft. I reviewed my first draft which became an input in my second draft which gained more clarify after reviewing the first draft.
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