I listened to the audio book read by the author and I found it engrossing. I treated this book as a collection of stories, studies, and anecdotes all with the common theme of human understanding. It seems like some of the science might be lacking (small sample sizes and anecdotal studies). This didn't bother me greatly because there was no overall conclusion in the book to be disputed, just a series of individual stories and a vague "perception is hard" conclusion.