It's funny how a book about interaction design fails to provide a good interaction with its own content by constantly interrupting the reading experience with two pages long boxes in the middle of a sentence.
Besides that, it's a short introduction to the subject and it can be useful to understand some basic topics.

Somehow Mr. Saffer managed to take what should be a fun & interesting topic to anyone who loves & lives computers and he made it dull-academic-wire-grey-academic-framed-dull.

I couldn't finish it.

the book were totally magnificent.

Fall 2011 text book.