If you are not familiar with all the - to me anyway - rather arcane language which is used to describe the varieties of economic theory, then you might find some parts of this book hard to grasp. In fact, the author even states that some of the ideas or theories held dear by various economic schools of thought, may seem mad to many people.
With regards to the global financial crisis the gist of it is, the beautiful numbers of the economic modeling were held more important to these economic theorists than reality itself.
Biographer Robert Skidelsky, Emeritus Professor of Political Economy at the University of Warwick, is perhaps most well known for his three volume life of John Maynard Keynes. Many years ago I read the first volume, but didn't pursue the following volumes. From memory, I thought his Skidelsky's style a bit dry and flavourelss.
This short book is okay if you're a lay reader, but only just. It's divided into three parts. The first deals with the global financial crisis, and how it all came about. The second part details Keyne's economic ideas, plus other economic schools of thought. The final section wraps up with some Keynesian solutions to the world's current economic dilemmas.
I can't say I enjoyed this book much. Reading about economic prescriptions is not really my cup of tea. My mind kept wandering back to the wonderful John Kenneth Galbraith's book The Affluent Society, which was more enjoyable on matters economic.