Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dissappointing.

The code examples are sketchy and incomplete, and often utilize techniques that may be good practice but that obfuscate the concept the reader is trying to learn.For example his coverage of the Delegation pattern (which I have yet to see documented in any other book, I'm still looking :) is verbosely explained but the accompanying example code is so vague and has so many ...'s as to be almost unusable.