Legendary money manager Ken Fisher outlines the most common_and costly_mistakes investors make. Small cap stocks are best for all time. Bunk! A trade deficit is bad for markets. Bunk! Stocks can't rise on high unemployment. Bunk! Many investors think they are safest following widely accepted Wall Street wisdom_but much of Wall Street wisdom isn't so wise. In fact, it can be costly bunk. In Debunkery: Learn It, Do It, and Profit From It_Seeing Through Wall Street's Money-Killing Myths, Ken Fisher_named one of the 30 most influential individuals of the last three decades by Investment Advisor magazine_details why so many investors fail to get the long-term results they desire. The short answer is many investors fail to question if what they believe is true_and are therefore blinded by tradition, biases, ideology, or any number of cognitive errors. Your goal as an investor shouldn't be to be error-free_that's impossible. Rather, to be more successful, you should aim to lower your error rate. Debunkery gets you started by debunking 50 common myths_but that's just the beginning. It also gives you the tools you need to continue to do your own debunkery for the rest of your investing career.