Every math teacher should read.  So should their administrators.  Every politician should be required to read this.  Lay people will enjoy it if they like stories that are well-written.<br><br>I am a high school math teacher so I enjoyed that the author kept all of the math in the text or the notes.  But those who are not mathematically inclined should enjoy most of it because the stores are so good and the telling is excellent.  Even if math bothers you, you will enjoy it because the truths that the author reveals will startle or delight you.  The vignettes and truths are similar to Freakonomics so if you liked that book, you will enjoy this one.