What is the reason behind the crisis of 2008? Assertedly, a financial bubble. And what about Great Depression in 1929? A bubble and lack of money (Wiki gives 9 reasons at choice). Shocking crises shaking richest economies to the core seem to happen occasionally and wise financers are again and again unable to anticipate and explain them even when a crisis has happened.
However there is a sequence of technology revolutions and it is linked to crises consistently. What revolution do we observe now and when will we observe its bright side? The accurate answer costs dozens if not hundreds of trillions of dollars. The author gives his version in chapter 9.