I did a search here and nothing came up, so thought I'd post this interesting article. I liked these guys first book (though I 'didn't like' some of their conclusions on some issues - my personal hot buttons.) I found their writing excellent and well thought out however.
http://online.wsj.com/article/SB10001424052748704335904574495643459234318.html
http://online.wsj.com/article/SB10001424052748704335904574495643459234318.html