 CONT: When Harold and Professor Hilbert start going over Hilberts  checklist of tragic heroes, Hilbert is eating a cup of yogurt. A  moment after Hilbert takes his first spoon of yogurt, the camera  cuts away. When it comes back again, theres a spot of yogurt on his  tie. When the camera cuts away and later returns, it is gone, and  moments later, it is back on the tie again.