If you are not aware of Heterodox economics, you are still living in the neo-classical bubble. All the decisions made today, the reason we are in a double dip recession can be seen through this book- ie through the irrationality of mainstream economists. This book is an incredible introduction to Heteredox economics and introduces a new concept of 'realism' (as opposed to instrumentalism). Basically, all neo-classical policies have been built on an imagined world with no concept of the REAL world - the one which exists and is perhaps "non-ergodic". This book covers the theories of Marx and Keynes (but more importantly) Sraffa, Kalecki, and many others.
I bought this book as it was recommended for my course at the University of Glasgow and believe it or not, my own tutors (PhD students) had not heard of Post-Keynesian economics! They were gobsmacked to find Keen's Debunking Economics disproving many widely accepted economic theorems. Just remember folks: "It is better to roughly right than precisely wrong".
Give this book a read if you want to be educated in REAL economics!
(Also expect this book not be a standard grade textbook, it is a small A5 sized 164 paged book- not the textbook I was expecting!)