There was an engineer, a physicist, and and a mathematician on a train in Scotland. The train goes by a field with a black sheep in it.
Engineer: "Wow, Scotland has lots of black sheep"
Physicist: "Actually, we only know that there is at least one black sheep in Scotland"
Mathematician: "No, all we we know is that one side of something that looks vaguely sheep like is colored black in Scotland"
Philosopher: "All I know is that I am thinking of black sheep in my mind, and I am thinking of making conversation with an engineer, physicist, and mathematician"
Poll
