many years back, though I was then very young and inexperienced a reader, I thought the book was very superficial and often arbitrary in views and speculations. For instance, it categorizes Japan into a separate "civilization", which just sounds ridiculous to a Chinese reader. As well, it is almost pretentiously"predictive". It admits that it cannot tell the deliberate actions of its "civilizations", but it can still predict the actions of some particular nations as a subset of particular civilization.
The methodology as revealed in the book reminded me a proverb: if the only tool you have is a hammer, then everything resembles a nail.
I would doubt if such a foolish boom would have had such influences in the Islamic nations and Russia though.