I hold a stainless steel sphere in the palm of my hand: the lines and shapes of the world bend in its reflection. The sphere shifts between my fingers, heavy, carrying both seemingly untamable art and complex mathematics. I ponder not only the beautifully rendered drawing I could trace out of the depths of this sphere, but also the formulas required to reconstruct the original scene from the warped reflection. I am fascinated by the third dimension: how does it...