People in both [the financial markets and baseball] operate with beliefs and biases. To the extent you can eliminate both and replace them with data, you gain a clear advantage. ... Many people think they are smarter than others in baseball and that the game on the field is simply what they think it is through their set of images/beliefs. Actual data from the market means more than individual perception/belief. The same is true in baseball." -John Henry, owner of the Boston Red Sox 1