I bought this book because for a while now I have been reading up on world history. Also, many of the customer reviews for the book seemed extremely positive. I can now say that this book was as good as the reviews and as good or better than any other such books that I have read.
When considering single (or, in this case, double) volumes that cover such a massive topic area, two complaints commonly crop up. The first is usually that such a work is too dense or impenetrable for casual history-enthusiasts. Normally, I argue that this can only be expected; but in this case I think I can say that the book shouldn't be too much of a problem for most people, even if they are fairly new to reading up on history. Also, with some focus on the lighter (or more cultured) aspects of history - such as the development of European art, etc - I found there to be plenty of breathing space between paragraphs that were perhaps more challenging.
The second complaint usually has it that one or two volumes surely cannot boast of being a 'history of the WHOLE world'. Again, I normally counter this by saying that of course this cannot be expected either. Naturally, the full history of the whole world cannot be condensed into merely a few thousand pages. However, in the case of "A History of the 'Modern' World", this argument is almost redundant. The book does not promise to review every culture and history that has been; it promises to consider the 'modern world' and discuss where that came from. i.e., if a culture no longer exists and had little effect on the world, then it is not really for the book to consider. Put another way, the emphasis is on the cultures and civilisations of yesterday and how they all came together and influenced each other to form the cultures and civilisations of today. Given that the thesis of this book is therefore more specific than is often assumed, I felt that everything was covered exceptionally well.
So, in brief, this book is neither too dense or too brief. Further, I found it to be a highly compulsive read that kept me turning the pages at home, on the bus, on the train, and at various breaks during my working day. The material was fascinating and fairly well balanced and I believe that it put reasonably fair emphasis on most of the cultures of the world relative to their size and influence, etc. I also found it to compliment nicely all other books I've read on the subject, and its maps and graphs did a lot to help me process the information and gain a good understanding. Most importantly, though, is that it was just plain fun and enjoyable. I recommend this book very highly.