From Zero to Infinity: What Makes Numbers Interesting

I was a bit put off initially by the so-called proof that all numbers are interesting which appears after the contents page. (It isn't called a proof here, but it is later on page xv). Had proof been written in quotes it would have been OK, since to my mind it certainly isn't a proof and this led me to wonder how rigorous the rest of the book would be.Every now and then there are sentences or phrases which are a bit cumbersome which one has to read several times to understand what is being said. but perhaps this is because it is by an american author.Also surprising, considering this is the fifth edition, to find the odd error e.g. on p 112, which is presumably a typo?However, despite all that, an interesting book and one which might encourage one to go deeper into some of the topics covered.