This same procedure could in principle be repeated by a single observer, making many separate and independent observations from different perspectives, and then mapping them onto one another to obtain the «normative» description. (religion-online.org)
In essence, he argued that information can simultaneously cross the event horizon and never cross the event horizon, so long as no single observer can see it in both places. (sciencenews.org)
He agrees with the arguments laid out by Polchinski's team but suggests that it would be extremely difficult for a single observer to determine that a particle is engaged in entanglement polygamy. (sciencenews.org)