 By the use of polarized light 3D-glasses, the audience gets an impression about the way seeing works. In a semi-scientific way, two scientists explain the brain, the eyes and their functional connections. Most amazing is the explanation (with examples) of the scale of things that one is seeing: By changing the distance between the two lenses of the 3D-camera, which is equivalent to varying the distance between our eyes, a scenario like a fast motor-boat ride along a running, rocky river can be changed into a miniature-like-looking, model-train-scaled, nice little trip through the world of the very, very little people.