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An LLM is a lossy encyclopedia

simonwillison.net

11–20 of 365 posts

Re: An LLM is a lossy encyclopedia

#11
post #8

The first thing I tell the juniors under my supervision: any LLM is not a fact machine, even though sometimes it pretends to be. Double check everything!

The thing I always tell those who heavily trust its output is to ask it something you either already know the answer to or are something of an expert in; the flaws become much more evident.

The old joke is that you can get away with anything with a hi-vis vest and enough confidence, and LLM's pretty much work on that principle

Re: An LLM is a lossy encyclopedia

#13
post #8

The first thing I tell the juniors under my supervision: any LLM is not a fact machine, even though sometimes it pretends to be. Double check everything!

The thing I always tell those who heavily trust its output is to ask it something you either already know the answer to or are something of an expert in; the flaws become much more evident. The old joke is that you can get away with anything with a hi-vis vest and enough confidence, and LLM's pretty much work on that principle

A super heavy overconfidence of any LLM is what confuses a lot of people.

Re: An LLM is a lossy encyclopedia

#14
post #6

It's also important to say what it isn't. LLM detractors, for lack of a better word, expect an oracle and then when they find out it's just a lossily compressed blob of human knowledge with natural language as a query interface they say the tool is useless. I've got my opinion on whether that's useful or not and it's quite a bit more nuanced. You don't zoom-enhance JPEGs for a reason either.

> You don't zoom-enhance JPEGs for a reason either.

Tell that to the Google Pixel product team:

https://mk.absturztau.be/notes/ac4jnvjpskjc02lq

Re: An LLM is a lossy encyclopedia

#15
I think models will also become snapshots or time capsules (with obvious and non-obvious biases) that archaeologists of tomorrow (like in 500 years) will use to understand us and the change in society (e.g. how the models themselves change over timefrom encyclopaedic standpoint).

Re: An LLM is a lossy encyclopedia

#16
I find this a very useful analogy. Although it does not factor all the LLMs capabilties in.

I can also see them as very clever search engines, since this is one way I use them a lot: ask hard questions about a huge and legacy codebase.

These analogies do not really work for generating new code. A new metaphor I am starting to use is "translator engine": it is translating from human language to programming language. It in a way explains a lot of the stupidity I am seeing.

Re: An LLM is a lossy encyclopedia

#17
post #7

I disagree with that analogy, because LLMs have a lot of connections between text fragments, which an encyclopedia doesn't have to such a deep degree. An encyclopedia also can't interpret and output relevant knowledge from an input prompt.

It’s an analogy.
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