this post was submitted on 01 Jun 2025
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I'm looking for an article showing that LLMs don't know how they work internally (feddit.it)
submitted 6 days ago* (last edited 6 days ago) by lgsp@feddit.it to c/technology@lemmy.world
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I found the aeticle in a post on the fediverse, and I can't find it anymore.

The reaserchers asked a simple mathematical question to an LLM ( like 7+4) and then could see how internally it worked by finding similar paths, but nothing like performing mathematical reasoning, even if the final answer was correct.

Then they asked the LLM to explain how it found the result, what was it's internal reasoning. The answer was detailed step by step mathematical logic, like a human explaining how to perform an addition.

This showed 2 things:

  • LLM don't "know" how they work

  • the second answer was a rephrasing of original text used for training that explain how math works, so LLM just used that as an explanation

I think it was a very interesting an meaningful analysis

Can anyone help me find this?

EDIT: thanks to @theunknownmuncher @lemmy.world https://www.anthropic.com/research/tracing-thoughts-language-model its this one

EDIT2: I'm aware LLM dont "know" anything and don't reason, and it's exactly why I wanted to find the article. Some more details here: https://feddit.it/post/18191686/13815095

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[–] theunknownmuncher@lemmy.world 8 points 6 days ago (1 children)

https://www.anthropic.com/research/tracing-thoughts-language-model for one, the exact article OP was asking for

[–] ohwhatfollyisman@lemmy.world 7 points 6 days ago (1 children)

but this article espouses that llms do the opposite of logic, planning, and reasoning?

quoting:

Claude, on occasion, will give a plausible-sounding argument designed to agree with the user rather than to follow logical steps. We show this by asking it for help on a hard math problem while giving it an incorrect hint. We are able to “catch it in the act” as it makes up its fake reasoning,

are there any sources which show that llms use logic, conduct planning, and reason (as was asserted in the 2nd level comment)?

[–] theunknownmuncher@lemmy.world 6 points 6 days ago

No, you're misunderstanding the findings. It does show that LLMs do not explain their reasoning when asked, which makes sense and is expected. They do not have access to their inner-workings and generate a response that "sounds" right, but tracing their internal logic shows they operate differently than what they claim, when asked. You can't ask an LLM to explain its own reasoning. But the article shows how they've made progress with tracing under-the-hood, and the surprising results they found about how it is able to do things like plan ahead, which defeats the misconception that it is just "autocomplete"