Picture yourself walking on your daily routines and stumbling on a huge hole on the ground which only yesterday wasn’t just there. You falter, doubt your senses and feel a vague sensation of dizziness while you freeze your steps for fear of falling into it. At a second and more attentive observation, however, you realize to your bewilderment that what lies on the pavement right under your eyes is but a 3D drawing that looks so realistic you could swear, at first sight, that it was, in fact, a hole.
