Then the interviewer calls in the statistician and asks the same question, "What does two plus two equal?"
The statistician says, "On average, four - give or take ten percent, but on average four."
Then the interviewer calls in the accountant and poses the same question, "What does two plus two equal?"
The accountant gets up, locks the door, closes the shades, sits down next to the interviewer and says, "What do you want it to equal?"