6:50 the wavefronts of electromagnetic waves are reformatted when passing through each slit. In this case, the polarized lenses can now be considered as the origin of the light that passed through. 9:15 if we consider the entangled photons as two sides of an equation, and the lenses at different angles as a transformation to the photon, then we are applying different transformations to each sides of the equation. Normally there would be no solution, but not if we consider the complex plane. These photons on both sides of the equation are different in 3D after the transformation, but they are still equal and opposite. That is to say, parts of the values are transformed in a space we did not observe.