Well written, in an engaging way for non mathematicians & learned many things about biology in general along the way. The books introduces concepts which are complex, in an unintimidating, ( but not dumbed down ) engaging fashion. There are some good illustrations to compliment the text as examples and explanation. I would highly recommend this book to anyone interested in biology, healthcare or anyone else who may wish to deepen their understanding and appreciation of the world around us. I am a richer person for reading this book.