Why did the chicken cross the road?
Aristotle: It is the nature of chickens to cross roads.
Isaac Newton: Chickens at rest tend to stay at rest; chickens in motion tend to cross roads.
Albert Einstein: Whether the chicken crossed the road or the road moved beneath the chicken depends on your frame of reference.
Werner Heisenberg: We are not sure which side of the road the chicken was on, but it was moving very fast.
Wolfgang Pauli: There already was a chicken on this side of the road.
August Moebius: To get on the same side.