Or how about this one. A physicist, a mathematician and logician are on the train going to Scotland. As they cross the border into Scotland they see a black s

Or how about this one. A physicist, a mathematician and logician are on the train going to Scotland. As they cross the border into Scotland they see a black sheep on the hillside. Physicist proclaims,"Oh look at that. All the sheep in Scotland are black". The mathematician replies,"Oh no you can't conclude that. Really you can only conclude that one sheep in Scotland is black." And finally the logician pipes up and says, "Oh no you can't conclude that. You can only conclude that one sheep in Scotland is black, on one side."