https://www.sciencealert.com/quantum-phy...ocausality
EXCERPT: . . . What Einstein called "spooky" action at a distance could theoretically be evidence of retrocausality, which is the particle equivalent of you getting a stomach ache today thanks to tomorrow's bad lunch. [...] If two particles are connected in space at some point, measuring a property of one of them instantly sets the value for the other, no matter where in the Universe it has moved to. This 'entanglement' has been tested over and over again in light of Bell's theorem, plugging loopholes that might show they are really interacting on a local level in some way, in spite of what seems to be a distance. But if causality ran backwards, it would mean a particle could carry the action of its measurement back in time to when it was entangled, affecting its partner. No faster-than-light messages needed. That's the hypothesis Leifer and Pusey were going by....
MORE: https://www.sciencealert.com/quantum-phy...ocausality
EXCERPT: . . . What Einstein called "spooky" action at a distance could theoretically be evidence of retrocausality, which is the particle equivalent of you getting a stomach ache today thanks to tomorrow's bad lunch. [...] If two particles are connected in space at some point, measuring a property of one of them instantly sets the value for the other, no matter where in the Universe it has moved to. This 'entanglement' has been tested over and over again in light of Bell's theorem, plugging loopholes that might show they are really interacting on a local level in some way, in spite of what seems to be a distance. But if causality ran backwards, it would mean a particle could carry the action of its measurement back in time to when it was entangled, affecting its partner. No faster-than-light messages needed. That's the hypothesis Leifer and Pusey were going by....
MORE: https://www.sciencealert.com/quantum-phy...ocausality