I am finding the same problem with all articles in this sequence that I find with the explanation of Bayes' Theorem on Yudkowsky's main site. There are parts that seem so blindingly obvious they don't bear mentioning.

Yet soon thereafter, all of a sudden, I find myself completely lost. I can understand parts of the text separately, but can't link them together. I don't see where it comes from, where it's going, what problems it's addressing. I find it especially difficult to relate the illustrations to what's going on in the text.

I seldom have had this problem with the blog posts from the classical sequences (with some exceptions, such as his quantum physics sequence, which left me similarly confused).

Am I the only one who feels this way?

EDIT: upon reflection, this phenomenon, of feeling like there was a sudden, imperceptible jump from the boringly obvious to the utterly confusing, I've already experienced it before: in college, many lessons would follow this pattern, and it would take intensive study to figure out the steps the professor merrily jumped between what is, to them, two categories of the set of blindingly obvious things they already know and need to explain again. Maybe there's some sort of pattern there?