There was a lot that I really enjoyed about this book, but the informal tone and the hand-drawn charts and diagrams in particular made everything approachable, even when reading about non-Euclidean geometry. I also really liked the wide range of subject areas that were used in demonstrating the math underlying so much of what we see and hear in the news and in our day-to-day lives. Herein you'll read about lotteries (and how people can, and did, game a poorly designed one), why small states have the highest and lowest rates of cancer, why it's perfectly okay for Sweden to want to be more like the U.S. and for the U.S. to want to be more like Sweden, and how to think about elections, polls, and medical studies, and a whole lot more. This book was both informative and a heck of a lot of fun to read.