I think 'knowledge' can be gained from watching these lectures. By knowledge I mean facts. But if you want to learn a skill, you better be slogging on the homew

I think 'knowledge' can be gained from watching these lectures. By knowledge I mean facts. But if you want to learn a skill, you better be slogging on the homework's to gain intuition. I don't think you can learn discrete math by just watching lectures, you'll have to spend countless hours doing problems to learn anything non-trivial.