Re: One does not know the state of anything until it is measured.
Bell's theorem is merely an experimental setup where 2 entangled photons cannot have a hidden state that explains the weirdness. The experiment has been performed and Bell's theorem is violated so there is no hidden state in the photons. What is happening is that the 2-photon state has zero angular momentum and all measurements will conform to this fact. When the photons are far apart and the angular momentum of one photon is measured then we know that any measurement of the other photon will agree with this measurement.
The "collapse of the wave function" gives a misleading picture of what is happening. Your view of the wave function is certainly different after the measurement but there is no time dependence on this collapse - the other photon might be measured before you do your measurement and your measurement just confirms the remote measurement. If the measurements are separated by a space-like interval then it is impossible to tell which measurement occurred first.
Actually it gets weirder than this but the margins of this note are too small to elucidate.