We are convinced that we make rational choices all day long but professor Daniel Kahneman proved the opposite. His insights earned him a Nobel Prize in economics and led to so-called "behavioral economics". This discipline investigates how social, cognitive and emotional factors play a role in our financial decisions. Kahneman demonstrated that our intuition often takes the lead, even though we tell ourselves through all kinds of stories that we trust rational ideas. BBC investigates Kahneman's findings in How You Really Make Decisions. Hidden patterns of thought are uncovered and the battle between intuition and logic is thoroughly explored.