The pleasure of rooting for Goliath is that you can expect to win. The pleasure of rooting for David is that, while you don’t know what to expect, you stand at least a chance of being inspired.
The inability to envision a certain kind of person doing a certain kind of thing because you’ve never seen someone who looks like him do it before is not just a vice. It’s a luxury. What begins as a failure of the imagination ends as a market inefficiency: when you rule out an entire class of people from doing a job simply by their appearance, you are less likely to find the best person for the job.
Pretty girls tend to become insufferable because, being pretty, their faults are too much tolerated.
Managers tend to pick a strategy that is least likely to fail rather than pick a strategy that is most efficient. The pain of looking bad is worse than the gain of making the best move.