" How is it that you stay ahead of the game?
As I have said already, I look for the flaw in every investment thesis. When I find it, I am reassured. As long as I can see only the positive side I worry. Again, don't misunderstand me. I don't reject an investment thesis just because I can't see the negative side; I just remain leery. On the other hand, I am particularly keen on investment theses that the market is reluctant to accept. These are usually the strongest. Remember the saying, "The market climbs on a wall of worry. "

― George Soros , Soros on Soros: Staying Ahead of the Curve