John Bogle, the Vanguard founder, once shared a shocking example with PBS documentary series Frontline. Let’s assume you and your friend Michelle each invested in funds with identical performance over fifty years. The only difference is that you paid 2 percent lower fees than she did. So your investment returned 7 percent annually, while hers returned 5 percent. What would the difference be? On the surface, 2 percent in fees doesn’t seem like much. It’s natural to guess that your returns might