The mechanism by which light diffracts through a two-slit experiment is alledgedly due to the superposition of a single photon at the two-slit interface, causing the photon to either constructively or destructively interfere with itself. If this is the case, then can you please explain the following phonomena?: This is called aperture diffraction; and as you can see, there are no two slits or two apertures that the photons are interfering with, yet the diffraction pattern remains! Please explain. Please.