A few good articles on the Freakonomics blog:
Phil Gordon Answers Your Poker Questions / Great interview with poker pro Phil Gordon where he talks about randomness, psychology and the future of card playing.
Not-So-Free Ride: The trouble with negative externalities / On creating better-aligned incentives to deal with the effects of cars and the environment/costs to society. Perhaps some good suggestions for Buffett’s GEICO subsidiary.
This article by Sanjay Bakshi courtesy of Reflections on Value Investing explores the sunk-cost fallacy and the endowment effect. Both good heuristics to be aware of when making decisions.