It used what I told it both in the original case, and gave me reasoning for why not using it much was a decent choice (and I verified that it was right), and showed me with an example that demonstrated it was able to reason about how my feedback related to the original answer and apply it. Later it went on, as a result of a subsequent question, and fleshed out the rest of the process. Everything it gave me worked.
To me that is a clear example that while it certainly fails to apply concepts fairly often (and often writes broken code), in other cases it does well. I'll add that this was after I'd spent some time searching for examples and I found nothing like what I suggested and I was about to resign myself to a slog through a lot of really bad documentation, and searching for some of what it suggested afterwards as well made it clear it did not just crib from training data.
For me, this is an example of it reasoning better about the subject than a whole lot of people I found discussing this subject in forum posts I came across, who often made mistakes the code it gave me did not or made assumptions that the code ChatGPT gave me made clear were wrong (as I could verify from the fact it worked)
On the other hand it struggles with something as simple as addition of large numbers that a determined child could do.
Nobody will claim it's consistently reasoning well. But I also regularly see it reason better than a lot of people I know about specific subjects, and so it's exasperating to see people dismiss individual examples of failure as evidence it "cannot apply concepts properly" rather than as individual datapoints.
People both over- and under-estimate how well it can reason based on the types of problems they put to it, and it's certainly an interesting subject how to gauge an "alien intelligence" like this that is so uneven in areas where we expect a relatively even basis and so have all kinds of heuristics for whether someone "knows".
This is part of the problem: We've all gone through a childhood and while we've picked up different things, we mostly have a shared floor that is relatively even across a wide range of basic skills. LLMs don't have that, and that messes with peoples heads. Those of us who have gone into skilled professions similarly have all kinds of preconceptions about what a junior or senior developer looks like, for example, and LLMs do not fit neatly into those boxes.
They're dumb as small children in some areas, but still talk confidently about those subject as if they were an educated adult. That is a challenge and a problem. But that doesn't mean they're not able to reason about other subjects. Just not all of them.
