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Comment by sdesol | Hacker News Reader

I'm not sure if I would say human reasoning is 'probabilistic' unless you are taking a very far step back and saying based on how the person lived, they have ingrained biases (weights) that dictates how they reason. I don't know if LLMs have a built in scepticism like humans do, that plays a significant role in reasoning.

Regardless if you believe LLMs are probabilistic or not, I think what we are both saying is context is king and what it (LLM) says is dictated by the context (either through training) or introduced by the user.

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'I don't know if LLMs have a built in scepticism like humans do' - humans don't have an 'in built skepticism' -- we learn in through experience and through being taught how to 'reason' within school (and it takes a very long time to do this). You believe that this is in-grained but you may have forgotten having to slog through most of how the world works and being tested when you went to school and when your parents taught you these things. On the context component: yes, context is vitally important (just as it is with humans) -- you can't produce a great solution unless you understand the 'why' behind it and how the current solution works so I 100% agree with that.

For me, the way humans finish each other's sentences and often think of quotes from the same movies at the same time in conversation (when there is no clear reason for that quote to be a part of the conversation), indicates that there is a probabilistic element to human thinking.

Is it entirely probabilistic? I don't think so. But, it does seem that a chunk of our speech generation and processing is similar to LLMs. (e.g. given the words I've heard so far, my brain is guessing words x y z should come next.)

I feel like the conscious, executive mind humans have exercises some active control over our underlying probabilistic element. And LLMs lack the conscious executive.

e.g. They have our probabilistic capabilities, without some additional governing layer that humans have.

I think the better way to look at it is that probabilistic models seem to be an accurate model for human thought. We don't really know how humans think, but we know that they probably aren't violating information theoretic principles, and we observe similar phenomena when we compare humans with LLMs.

Humans have a neuro-chemical system that performs operations with electrical signals.

That's the level to look at, unless you have a dualist view of the brain (we are channeling a super-natural forces).

Yep, just like like looking at a birds feather through a microscope explains the principles of flight…

Complexity theory doesn’t have a mathematics (yet), but that doesn’t mean we can’t see that it exists. Studying the brain at the lowest levels haven’t lead to any major insights in how cognition functions.

I personally believe that quantum effects play a role and we’ll learn more once we understand the brain at that level, but I recognize that is an intuition and may well be wrong.

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