The Rift and 3D TVs are fundamentally the same. Light field adds 2 dimensions of information (2 axis that control the angle light travels). To me it is the diff

The Rift and 3D TVs are fundamentally the same. Light field adds 2 dimensions of information (2 axis that control the angle light travels). To me it is the difference between (2D+2D) and (2D×2D), or <x,y,z> and <x,y,z,∆x,∆y,∆z>.