Which is why my professor and classmate and I switched to Concrete Mathematics about halfway through working through chapter 1. More thorough examination of many of the topics in chapter 1, plus more material.
My advisor would always make a joke to his classes, when that book came up, that it had a dual purpose name - - that it was foundational, but also because it's hard as concrete. I used it as reference in some of my math classes but haven't given it a thorough read.
We worked through about 1/3 of the material starting one summer term (where we started on TAOCP) and finishing sometime in the fall. Definitely hard, but it also helped me finally understand a lot of math that I "knew" but hadn't yet grokked.
