Another perspective on this is.. When we're rendering a 3D environment on a 2D plane, we're projecting it "down", so that we can perceive it. When we're rende

Another perspective on this is.. When we're rendering a 3D environment on a 2D plane, we're projecting it "down", so that we can perceive it. When we're rendering a 2D environment on a 2D plane, are we doing nothing to to ? Maybe, but the 2D environment we've constructed to begin with is probably inspired from our native 3D thinking. But when we're rendering a 1D environment on a 2D plane, which we need to do to perceive it, because we don't have a visual organ for perceiving 1D environments of the kinds constructed in "native 2D thinking".. So we're projecting "up", adding data to convey a representation of the environment that we can perceive, not as it "is".