Mmm hmm. Most of the time that's the case. Let's face it, to read a four hundred page book and understand the material is to take 4 months of classes with a dedicated instructor helping you the whole time (Ie, School) and usually winds up with the student only demonstrating a passable knowledge at the end. So if you didn't quite grasp one small niche of this series of books on the first few casual, and likely broken up glances, it isn't something I could get all up in arms about.