Predictably Irrational is a Psychology and behavioral economics book written by Dan Ariely. It’s a well written book and it increased my analytical skills further while I finish. Only some of the book gives the satisfaction that you have learned something after finish reading the books and this book is one for sure. For eg ., It explains how human beings gets excited about free and how some company utilizes. It talks about virtual ownership and the technique used by E-bay. The author Dan Ariely teaches psychology and behavior economics in Dukes University at United States Of America. It is the sure book to read if you want to improve the decision making skill in normal life to big corporate decisions.