4.0

Very enjoyable book on math that I think would be most appreciated by people who love the concepts of advanced math, but don't have the time or discipline to really learn it. Strogatz does a great job in building from the very basic principles of counting to some more recent and complex, but relatively easy to understand, areas of number theory.

My only regret is that I wish I had read The Joy of x before reading How Not to Be Wrong, as this book covers similar ground, but at a more superficial level.