The Cosmological Delay Double Slit Experiment

John Wheeler proposed this kind of experiment, a cosmological delayed choice double slit experiment. According to Einstein's theory of general relativity, it bends space and you can get a gravitation. From Earth, it can look like there are actually two quasars - but that is an optical illusion created by bending of space. So the choice I make today determines the 10 billion year history of that photon.