This book was written in a surprisingly easy to read fashion. Carl found a way to fill a book with facts while at the same time keeping the readers interest. I had a hard time with a couple words and I became a little confused on a few subjects, but after a little research I was able to figure it out. Carl taught many interesting subjects including how some myths can be explained with science. He also talks about trying to find a way to measure intelligence by comparing brain mass to body mass. Overall I liked this book. It was easy to read and was full of interesting facts. 9/10 IGN.