[grumple]

You are correct, Code does not contain all of the knowledge relevant to computer science. In fact, no book does, as far as I'm aware. But it is far more comprehensive than the OP because it covers a greater breadth of subjects and in greater depth with more accessibility. You're comparing 50 pages of blog posts to 300 pages of book.

[kragen]

I think there's more computer science in those 50 pages, really. It's an easy win.