Richard Charnin is an expert in this field, the real deal, and, to put it simply-- He proves amazing things with numbers. He does amazing things with the data, and it isn't magic, it's Math. He's like that great teacher whom you (hopefully) had in high school, that took the data that everyone else could see but didn't know what to do with, applied proven formulas, and extracted dramatic answers from it all that you hadn't even suspected were there. He does that clearly and concisely and it has broad, striking implications. Great book.