He doesn't know that the blades are size 4.
He doesn't know that he wears a 1.
He doesn't know that the blades are on the wrong feet.
He does know he got those skates on by himself.
He does know that that he can go 2 or 3 feet without a fall.
He does know that he just figured out that his pants have been on backwards all day, and he fixed them without any help!