Consider this:

If you just took a time machine 10 years back, and asked people to label activities done by the humans/the human brain as being "thinking" or not...

...I feel rather certain that a lot of those activities that LLM do today we would simply label "thinking" without questioning it further.

Myself I know that 10 years ago I would certainly have labelled an interactive debug loop where Claude adds debug log output, reruns tests, diagnose the log output, and fixes the bug -- all on its own initiative -- to be "thinking".

Lots of comments here discussion what the definition of the word "thinking" is. But it is the advent of AI itself that is making us question that definition at all, and that is kind of a revolution itself.

This question will likely be resolved by us figuring out that the word "thinking" is ill-defined and not useful any longer; and for most people to develop richer vocabularies for different parts of human brain activity and consider some of them to be more "mechanical". It will likely not be resolved by AI getting to a certain "level". AI is so very different to us yet can do so many of the same things, that the words we commonly use start breaking down.