Although his system is not perfect, he brings attention to the fact that real estate is cyclical. Just like summer, fall, winter, spring, real estate goes up and down.
As far as writing the book, I think that only makes sense. Now he is in a Sell signal, so once he’s sold all his properties, what can he do to make money over the next few years? He can sell his books, give seminars. According to him, the next chance to make money will be at the bottom of the market, which is probably 5 years away he says.