Albert Einstein as quoted by Werner Heisenberg: "Whether you can observe a thing or not depends on the theory which you use. It is the theory which decides wha

Albert Einstein as quoted by Werner Heisenberg: "Whether you can observe a thing or not depends on the theory which you use. It is the theory which decides what can be observed." His argument was like this: "Observation means that we construct some connection between a phenomenon and our realization of the phenomenon. There is something happening in the atom, the light is emitted, the light hits the photographic plate, we see the photographic plate and so on and so on. In this whole course of events between the atom and your eye and your consciousness you must assume that everything works as in the old physics. If you would change the theory concerning this sequence of events then of course the observation would be altered."