Bowie in 1999 talking about how society changed starting in 1975, and predicted the fracturing coming from the internet. I’m quite impressed with his intelligence.
I find the fourth turning stuff incredibly fascinating. It's also referred to as Elliott Wave Theory.
Robert Prechter is a financial analyst that looks at societal trends, fashion trends, etc. and makes financial predictions off it. There is definately something to the generational theory. The most recent predictions I read from about a decade ago were that we would see lack of faith in our institutions, a desire for more societal power versus individual, and a dislike of the Fox News "yelling voices on tv" type of news. This all wildly came true.