He goes over to his terminal and runs his program. My geometry teacher was sometimes acute, and sometimes obtuse, but always, he was right. A biologist, a statistician, a mathematician and a computer scientist are on a photo-safari in africa. They drive out on the savannah in their jeep, stop and scout the horizon with their binoculars. We only know there's one white zebra.
Pie are round.
Cornbread are square. Algebraists do it in groups. Von Neumann and Nobert Weiner were both the subject of many dotty professor stories. One time one of his students tried to get more helpful information by asking if there was another way to solve the problem. Weiner was in fact very absent minded.