Have you ever . . . Invested time in something that, in hindsight, just wasn't worth it? Paid too much in an eBay auction? Continued to do something you knew was bad for you? Sold stocks too late, or too early? Taken credit for success, but blamed failure on external circumstances? Backed the wrong horse? These are examples of what the author calls cognitive biases, simple errors all of us make in day-to-day thinking. But by knowing what they are...