You could rely on the so-called experts to make smart decisions for you. But experts often disagree with each other. That leaves you to pick the best expert, and that’s something you probably aren’t an expert at doing. Look at the stock market. There are about 10,000 stocks. But there are 20,000 managed stock funds, the majority of which can’t beat a stock-picking monkey with a dartboard. You have a 1-in-10,000 chance of randomly picking the best stock in the world and a 1-in-20,000 chance of randomly picking the best stock expert.