I don't get it. His example just uses "let ... in" syntax instead of putting the next func as an argument to the first. It seemed to be exactly the same thing "

I don't get it. His example just uses "let ... in" syntax instead of putting the next func as an argument to the first. It seemed to be exactly the same thing "deeply nested functions". He just chose not to indent after the "in", and he has a nicer syntax for nested functions.