I'm not usually that interested in physics so this isn't the kind of book I would usually read but I received a free copy in exchange for promising to review it and you have to be an idiot to turn down free books so I read it anyway. I've read the story books by Stephen Hawking and watched him on TV but this was my first time reading an actual science book by him so I wasn't sure what to expect.
I found it surprisingly easy to read, all of the usually impossible to unravel scientific nonsense/technical terms were explaining with simple and even humorous models, though you may still have difficultly explaining them to other people as I found out when attempting to inform my little sister's about why goldfish in curved bowls could make up different laws of physics and still be right... at least I think that's what that chapter was about...
I also really liked the pictures because there are a lot of beautifully presented diagrams that make it easier to understand, as well as some kind of amusing cartoons which at least distract from the existential crisis you'll probably get from this book. There are also some lovely illustrations at the end of each chapter of butterflies and things like that following the maths spiral which may sound irrelevant but I've rarely found a scientific book that I don't get tired of looking at for so long.
Since this has to be a fair review obviously I'm going to have to include some things I didn't like so much. Despite the good explanations I still found it was an awful lot to take in and on several occasions I realized I'd just been skimming over the words without really taking it in. Also, and this may just be because I'm not really into physics, most of it is just utterly mind-boggling and while it's pretty cool to read about it can be really hard to wrap your head around.
However, I think if you do already understand a lot of physics then you probably wouldn't get this problem as I think it's more to do with me trying to take in so much very quickly than a flaw with the actual book, so overall if you want a casual science book then maybe this isn't the best pick but is physics is already your passion then just go ahead and get it instead of reading this.