I read this because it was referenced in the book Pyramid Power. It's a very interesting topic, that there are repeating cycles that influence economic trends, and historical events, that exist outside the control of humanity.
The three most powerful influences are the weather, atmospheric ozone, and atmospheric electricity, with the sun being a significant factor in all three, which effects not only economics, crop fertility, industrial production, but also mood and behavior. It's a fascinating topic, but unfortunately this was probably one of the most boring books I've ever read in my life.
This was an interesting read but I found the language a bit stodgy at times and due to the 1947 release the data was outdated. On a positive note it has given me a new perspective on data interpretation and prediction in business.
A bit dated but a good introduction to the phenomenon of cyclical trends that tend to manifest themselves in... everything, hence providing a view to the actual order of things inherent in the world as opposed to the everyday experience that may seem punctuated with seemingly random and chaotic events. A concept applicable to those interested in coming to a clearer understanding of how the universe functions. Actual discussion of applicability toward prediction is a bit light so the full title of the book is a bit beguiling in that regard. But it does serve as good primer on moving averages and ratio scales which are good tools to apply to reams of data.