4D puppet show

Welcome to my Shadow Puppet Show. This is a dog. This is a deer. And this is a bird. The shadows are flat, two-dimensional projections of the shapes I'm making with my hands. In a two-dimensional world, a shadow puppet would appear as a one-dimensional shadow on a wall. A one-dimensional shadow is just a dark line, but our 2D friends might still find it entertaining. In a world with four spatial dimensions, the puppets would appear as three-dimensional shadows on a wall. Three-dimensional dogs, deer, and birds that show just one angle of a more complex shape.