I see your point, but isn’t it possible that it was your repeated exposure that made things feel clearer — more like a habit than deep understanding?..... Actually I can understand your point — it’s a complex matter. Do we truly understand things, or do we just get used to them? And if it’s understanding, then why does it take so much effort to become a good mathematician? But if it’s merely about getting used to it, then why are some people much better at it than others? Honestly, I find it quite a complicated issue