Here’s a joke Canadian Prime Minister Stephen Harper might know:
A mathematician, an accountant and an economist apply for the same job.
The interviewer calls in the mathematician and asks, “What does two plus two equal?” The mathematician replies “Four.” The interviewer asks, “Four exactly?” The mathematician looks incredulously and says, “Yes, four, exactly.”
Then the interviewer calls in the accountant and asks the same question, “What does two plus two equal?” the accountant says, “On average, four – give or take ten percent, but on average, four.”
The interviewer calls in the economist and poses the same question, “What does two plus two equal?” The economist gets up, locks the door, closes the window shade, sits down next to the interviewer and says, “What do you want it to equal?”
(if you didn’t know, Mr Harper is an economist)