Black Sheep

An engineer, a scientist, a mathematician, and a philosopher are hiking through the hills of Scotland, when they see a lone black sheep in a field.

The engineer says, “What do you know, it looks like the sheep around here are black.” The scientist looks at him skeptically and replies, “Well, at least some of them are.” The mathematician considers this for a moment and replies, “Well, at least one of them is.” Then the philosopher turns to them and says, “Well, at least on one side.”

http://home.sprynet.com/~owl1/philjoke.htm

{[blue Or the philosopher might be even more sceptical than that! ]}