When the Sphere visits Flatland right at the auspicious moment of transition into the third millennium at the inception of the year 2000, he first tries to teach A Square about the third dimension by verbal argument. But A Square cannot comprehend such an expanded universe of higher dimensionality, so the Sphere tears him from the plane of Flatland and treats him to a view of his entire universe from “above” (a dimension previously inconceivable to A Square). Of course, A Square has learned the shapes of buildings and compatriots in his 2-D world, but he can resolve these forms only by laboriously working his way around their perimeters and measuring their sides and angles. From his new vantage point above his old world, however, A Square can see the entire form of each Flatland object all at once—a wondrously new vision that he can conceive and express only as seeing the “invisible inside” of things in one grand, full, and instantaneous view.