Right, Popper. I guess that's why they were adjacent on my university reading list ;) But I don't think of that as an expression of limitations in hypotheses as formal systems. Because you don't reject an hypothesis (or not) through logic and reasoning. You do that through observation and experiment. So it's rather a fundamental limitation in the scientific method.

Anyway, I get that they're similar. But I don't see them as the same, but rather complementary.

I also get what you say about knowledge. Scientific knowledge is what you get by studying external reality. But there is also knowledge that you get through introspection.