Sandro del Prete

In the old city of Biel in Switzerland, a class of young students is busy drawing illustrations of old homes. The teacher stops in front of one of his students and asks, "What kind of house is this? It has neither front nor back! It is distorted and suspended in midair! Have you ever seen a house that flies?" He then corrects the student's illustration: "Now, this is what a house should look like! This one is solid!" A little later, the student folds the illustration into the shape of a paper plane and launches it. The teacher angrily asks, "And what are you doing now?" The student replies, "You said that house can't fly. I just wanted to see if was true!"