I disagree. To paraphrase the intro to my Linear Systems book "math is a contact sport." This applies to most intricate topics. If an expert takes you through a

I disagree. To paraphrase the intro to my Linear Systems book "math is a contact sport." This applies to most intricate topics. If an expert takes you through a one hour tour of a subject, you will get the salient points, but there's a lot of intuition and that gets lost by you not struggling with the material on your own. That's why we have homework.