We have a strange inversion of the normal order of time. We, now, by moving the [screen] in or out have an unavoidable effect on what we have a right to say about the already past history of that photon.
We have a strange inversion of the normal order of time. We, now, by moving the [screen] in or out have an unavoidable effect on what we have a right to say about the already past history of that photon.