This is certainly one of the best mathematics books I've read whet the target audience would be those who have an interest but don't work in the maths or physics world. The entire history of zero is covered and I really enjoyed the whole thing. It does get more complicated as the book progresses but that does make sense since the maths also gets more complicated with time. It does mean though that depending on you're pre existing knowledge you may hit a point where you dotter to struggle to follow. It definitely took me longer to read each page as I went on. It's a neat perfect example of a book of this genre and I'm sure I'll read it again as it's so interesting, especially the ancient history art the start of the book.