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An LLM is a lossy encyclopedia

(simonwillison.net)
509 points tosh | 1 comments | | HN request time: 0.001s | source

(the referenced HN thread starts at https://news.ycombinator.com/item?id=45060519)
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latexr ◴[] No.45101170[source]
A lossy encyclopaedia should be missing information and be obvious about it, not making it up without your knowledge and changing the answer every time.

When you have a lossy piece of media, such as a compressed sound or image file, you can always see the resemblance to the original and note the degradation as it happens. You never have a clear JPEG of a lamp, compress it, and get a clear image of the Milky Way, then reopen the image and get a clear image of a pile of dirt.

Furthermore, an encyclopaedia is something you can reference and learn from without a goal, it allows you to peruse information you have no concept of. Not so with LLMs, which you have to query to get an answer.

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TacticalCoder ◴[] No.45101267[source]
> You never have a clear JPEG of a lamp, compress it, and get a clear image of the Milky Way, then reopen the image and get a clear image of a pile of dirt.

Oh but it's much worse than that: because most LLMs aren't deterministic in the way they operate [1], you can get a pristine image of a different pile of dirt every single time you ask.

[1] there are models where if you have the "model + prompt + seed" you're at least guaranteed to get the same output every single time. FWIW I use LLMs but I cannot integrate them in anything I produce when what they output ain't deterministic.

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1. latexr ◴[] No.45101776[source]
> you can get a pristine image of a different pile of dirt every single time you ask.

That’s what I was trying to convey with the “then reopen the image” bit. But I chose a different image of a different thing rather than a different image of a similar thing.