OK, PhysMachine, I will get personal here, You are at Georgia Tech. You are over generalizing. I am not going to throw out everything that has been thought for the past 3000 years. After all, who was it that first proposed the atom? Was it Plato? What I am saying is that if the double slit defraction experiment was done with a source of light that was truly designed to produce single photons, it would not yeild a defraction pattern. To do that experiment would result in having to reform current thinking in particle physics. But science only advances by constant reform and refinement. Right? Right. You are at Georgia Tech. You have at your finger tips whether you realize it or not the facility to do the very experiment I am talking about. Would you like to talk about this further?