If it is not easy, then why the hell would they work there? :rofl:
That seems to summarize you ignorance quite succintly. I can't say I had much sympathy for your position before, but now any residues just vanished off the face of the earth. The mere fact that you state maths is hard to learn from text books (and *forces* you to have attend to lectures as if that were a burden rather than a privilege - you're at UCLA, right, so you actually get to hear Terry Tao in person) speaks volumes. Maths *is* hard to learn. Yes, some textbooks are bad, but the fact you find them difficult doesn't appear to be any metric on the book's quality.