alt Hacker News> No refusal fires, no warning appears — the probability just moves
I don't really understand why this type of pattern occurs, where the later words in a sentence don't properly connect to the earlier ones in AI-generated text.
"The probability just moves" should, in fluent English, be something like "the model just selects a different word". And "no warning appears" shouldn't be in the sentence at all, as it adds nothing that couldn't be better said by "the model neither refuses nor equivocates".
I wish I better understood how ingesting and averaging large amounts of text produced such a success in building syntactically-valid clauses and such a failure in building semantically-sensible ones. These LLM sentences are junk food, high in caloric word count and devoid of the nutrition of meaning.
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It's really simple. RL on human evaluators selects for this kind of 'rhetorical structure with nonsensical content'.
Train on a thousand tasks with a thousand human evaluators and you have trained a thousand times on 'affect a human' and only once on any given task.
By necessity, you will get outputs that make lots of sense in the space of general patterns that affect people, but don't in the object level reality of what's actually being said. The model has been trained 1000x more on the former.
Put another way: the framing is hyper-sensical while the content is gibberish.
This is a very reliable tell for AI generated content (well, highly RL'd content, anyway).
Neural networks are universal approximators. The function being approximated in an LLM is the mental process required to write like a human. Thinking of it as an averaging devoid of meaning is not really correct.
>I wish I better understood how ingesting and averaging large amounts of text produced such a success in building syntactically-valid clauses
I wonder if these LLMs are succumbing to the precocious teacher's pet syndrome, where a student gets rewarded for using big words and certain styles that they think will get better grades (rather than working on trying to convey ideas better, etc).
> I wish I better understood how ingesting and averaging large amounts of text produced such a success in building syntactically-valid clauses and such a failure in building semantically-sensible ones. These LLM sentences are junk food, high in caloric word count and devoid of the nutrition of meaning.
I suspect that's because human language is selected for meaningful phrases due to being part of a process that's related to predicting future states of the world. Though it might be interesting to compare domains of thought with less precision to those like engineering where making accurate predictions is necessary.
> I don't really understand why this type of pattern occurs, where the later words in a sentence don't properly connect to the earlier ones in AI-generated text.
Because AI is not intelligent, it doesn't "know" what it previously output even a token ago. People keep saying this, but it's quite literally fancy autocorrect. LLMs traverse optimized paths along multi-dimensional manifolds and trick our wrinkly grey matter into thinking we're being talked to. Super powerful and very fun to work with, but assuming a ghost in the shell would be illusory.
Surely I cannot be the only one who finds some degree of humor in a bunch of nerds being put off by the first gen of "real" AI being much more like a charismatic extroverted socialite than a strictly logical monotone robot.