Why does this apply for math but not for being a doctor?? It can do basic math, but you say that of course it can't do math- math isn't language. The fact that it can do some basic diagnosis does not mean it's good at doctor things or even that its better than webmd.
Arithmetic requires a step-by-step execution of an algorithm. LLMs don't do that implicitly. What they do is vector adjacency search in absurdly high-dimensional space. This makes them good at giving you things related to what you wrote. But it's the opposite of executing arbitrary algorithms.
Or, look at it this way: the LLM doesn't have a "voice in its head" in any form other than a back-and-forth with you. If I gave you any arithmetic problem less trivial than the times table, you won't suddenly come up with the right answer - you'll do some sequence of steps in your head. If you let an LLM voice the steps, it gets better at procedural tasks too.
Despite the article, I don’t think it would be a good doctor.
I read a report of a doctor who tried it on his case files from the ER (I’m sure it was here in HN) It called some of the cases correctly, missed a few others, and would have killed one woman. I’m sure it has its place, but use a real doctor if your symptoms are in any way concerning.