does homework help you learn?

Actually it varies to different people though to most it is helpful.
I have a friend who believes he doesn't learn anything from homework but learns rather from a 'different perspective'. To him, homework is just a waste of time since he reckons it's basically repeating the same question over and over again. (Yes I reckon his response to h/w is odd but everyone is different)

For me, it helps a bit but I dont think its necessary that a teacher has to repeat the method of a question like 30 times. (like using pythagoras theorem in 30 different questions with no additions or trick questions to it)