Thanks Steven;
Hmmm … so, the photons, (in "contact") initially, exist at a specific, unique point in spacetime. Somehow, the properties of one of the photons, gets changed by a later measurement, which then appears to cause a change in the other, no matter how much separation between, or how much later, the measurements are made (??)
If I have this right, then there are no statements in the above made about the cause of the entanglement (or initial "contact"). The thing about this entanglement thing is that the measurement of one effects the other's state after they becomes physically and temporally separated (?)
So, it seems that they are still trying to eliminate the possibility that the local environmental test conditions at the 'primary test site doesn't somehow, interact to influence the outcome at the secondary test site (?).
Once they've pinned this down, the conclusion would be as you have said .. the entanglement is established by something going on initially, rather than later (?)
But what keeps the two photons in contact ? I guess this is the BIG question, huh ?
(Gaede says 'a twisted, invisible rope' !!
… he's a legend, y'know !!
)
Cheers
PS: I'm not asserting anything here .. I'm just trying to 'align' myself with the concepts. (Except the Gaede comment
)