There is an interesting article up on You Are Not So Smart about the Sunk Cost Fallacy and how it is the driving force behind Facebook's Farmville. From the article: The Misconception: You make rational decisions based on the future value of objects, investments and experiences. The Truth: Your decisions are tainted by the emotional investments you accumulate, and the more you invest in something the harder it becomes to abandon it. It is a pretty interesting article about sunk cost and the our aversion to loss. In the end it suggests that people don't play Farmville for fun or because they enjoy it, but rather: "Farmville players are mired in a pit of sunk costs. They can never get back the time or the money they’ve spent, but they keep playing to avoid feeling the pain of loss and the ugly sensation waste creates." Focus: Discuss the article and the Sunk Cost Fallacy. Do you fall prey to loss aversion like this anywhere in your personal life? Like the article said, it can be pretty hard to recognize when you're doing it. Alt Focus: Farmville. It sucks, obviously. Do you play it? Any good stories of people you know that have lost their job or destroyed relationships because of this game?