[kiba]

Assuming you did and I understand your point, I disagree with it insofar as it applies to knowledge. Yes, JIT manufacturing of real things can be easily tripped up and it screwed us during the pandemic, but does that apply here? The author is saying "when you figure out what you need to read, go out and get it" rather than "keep a bunch of tabs and bookmarks hanging around in case you need them".

I am an advocate of learning broadly, instead of being narrow. That's not to say you shouldn't learn only the things you found that you need, but that it shouldn't be the only thing you're doing.

Books, I assumed, will be there if you need it.

The just in time example is a great example of why you need to read broadly. If you read about logistics about the pandemic, you would have learned about the weakness of just in time.