Harry Dent’s Book uses the same demographic argument. The premise is that in the US the peak earning age is about 46. Spending = earnings – savings, and historically savings has been in the 0-7% range, so the bulk of $ earned is spent, stimulating the economy.
Dent showed a strong historical correlation of the US stock market with this demographic and also made the same comparison to the Japanese market. The only difference is that Dent’s book was titled “Great Boom Ahead” and published in 1994.
The reviews I read on this book and the web site itself indicate that this is a thinly veiled rip-off of one of the elements of Dent’s book. Even the title is a play on Dent.
I wouldn’t support this by purchasing. Get Dent’s book, ignore the title, and focus on the demographic trends beyond 2010.