Richard Hamming: Does anyone believe that the difference between the Lebesgue and Riemann integrals can have physical significance, and that whether say, an airplane would or would not fly could depend on this difference? If such were claimed, I should not care to fly in that plane.
Only fly continuous and uniformly smooth planes. If Banach and Tarsky actually produce two oranges from one, do not attempt to eat either of them, too! ‎- 9000