Michael Lewis has found a remarkable partnership.  This is the story of the two gifted psychology professors, Amos Tversky and Daniel Kahneman who met in Israel in the 1960s.  Their forays behind the lines in Israeli wars to look for psychological insights based on practicalities are hilarious.  This unlikely friendship (one man is voluble, energetic, the other cerebral, problem-solving) has resulted in new and important theories on how we make decisions.  Their discoveries have revolutionised everything from Big Data to sport to finance to governance and to medicine.  From the best-selling author of The Big Short.