one thing I have thought about is the primary school experience that children are put through isn't really present with the online corpus.

we sit through days, weeks and months of 1 + 1 is 2, 2 + 2 is 4, 3 + 3 is 6 before we even go on to weeks of multiplication and division even.

These training sessions are done at a very young age and form a mathematical core model.

I think we would struggle being shown a Wikipedia page on how to do multiplication without having got the muscle memory of the basics internalized first