A businessman, a physicist, and a mathematician...

Three foreigners: a businessman, physicist, and mathematician, are talking about the country they're all visiting for the first time.

Suddenly, the businessman points out the window in surprise. "Look at that! The sheep in Scotland are black!"

Amused at how readily his new friend jumps to conclusions, the physicist corrects him: "No, all we can be certain of is that some of the sheep in Scotland are black."

The mathematician looks out the window himself, and corrects the both of them: "We know there exists a sheep in Scotland which is black on at least one side."

© Josh Staiger, joshstaiger@gmail.com