The single slit makes one pattern with a few on the side but they aren't very intense. The double slit pattern is where it gets strange. The slits line up with the spots in between the main line and the two on the outside. The two photons somehow multiply or split to make this amazing pattern. Just this is ridiculous. But it gets even crazier, when an observer such as a camera or a random electron, or anything else is near the photons while this crazy double split pattern is about to take place, the pattern doesn't appear. It comes out like the first one but with two solid lines, one for each photon.
THE PHOTONS ARE CONSCIOUS OF THE OBSERVER!!!
The photons, and all other particles are conscious... or maybe subconscious. Humans, animals, particles, and everything have this subconscious. WE ARE ALL RELATED WE ARE ALL ONE.
We come from the same place, and we all have this subconscious. In the subconscious an infinite amount of processing and so much else is going. But where does it all come from??