Douglas Gough's problem: The building that houses the Instituut-Lorentz on its second floor leans toward you by 7 degrees as you approach it from the parking lot. The second floor is then at an inclination of 22 degrees. Q: At which speed v does the Lorentz contraction stop the Instituut-Lorentz from leaning toward you? A: v/c = tan 7 tan 22 = 0.05. This happens to be the rms speed of an electron, in any given direction, in the core of the Sun. Colloquium Ehrenfestii, 29 September, 2004.