blivit
Blivet is an optical illusion and an example of an impossible object. In its most familiar form, a black-and-white line drawing depicts a three-pronged fork with cylindrical prongs at the top that appear to transform into two rectangular prongs at the bottom. The conflicting cues of perspective and depth make the shape seem to exist in two incompatible ways, creating a paradoxical figure that cannot exist in three-dimensional space.
Origins and naming of the term are uncertain. The blivet has circulated in puzzle collections, cartoons, and
Variations of the blivet exist, with different prong shapes or connects, but the core illusion—prongs that cannot