physics and mathematics clearly applies to them and their world yet they spend no time studying these fields in favor of magics that have limited application and are more just niche interests. like divination in their world still relies on glean vague predictions of the future from everyday objects. JKR's world building falls very much under "don't think about it too much"
Yeah and they've been hiding Hogwarts with magic but a shit ton of owls come there every morning. Just a dedicated grandpa with an interest for ornithology could clearly see something's going on.
But to be fair she wrote children's books, it's not her fault they became so popular even amongst adults.
But to be fair she wrote children's books, it's not her fault they became so popular even amongst adults.