> Aleph is not the symbol for Graham's number, rather it is the symbol for Cantor's orders of infinity.

So? We weren't doing math theory. Foreign language instead. He's allowed to entertain himself after his lessons are done, and he'll be familiar with that stuff when he does get there.

> Also, if he had a good teacher,

Sure. If he had one. The implication that there's any such teacher in public schools within 100 miles of us is absurd.