It's confusing. Can you simplify it? One photon heads toward the slits. One entangled photon heads toward the detector. (They are both entangled with each other, but I assume you mean one pair of entangled photons, not two pairs.) Is there a detector on the slits too? It seems like the point of the experiment is that the interference pattern only shows up when the ability to discern which-way is not available - which seems to me to support observer-principle type interpretations. Certainly I don't see any suggestion that there is a such thing as 'information' which is independent of some kind of sense receptivity. To the contrary: Time 6. Upon accessing the information gathered by the Coincidence Circuit, > we the observer are shocked to learn that the pattern shown by the > positions registered at D0 at Time 2 *depends entirely* on the > information *gathered* later at Time 4 and available to us at the > conclusion of the experiment. > The position of a photon at detector D0 has been registered and scanned. > Yet the actual position of the photon arriving at D0 *will be at one > place if we later learn* more information; and the actual position will > be at another place if we do > not.-http://www.bottomlayer.com/bottom/kim-scully/kim-scully-web.htm > I intentionally bolded the terms where the true nature of quantum is revealed - with the capacity to detect, 'learn', 'gather', i.e. to become informed through a sensory-motor event within the matter which makes up a physical instrument (including, but not limited to, human eyes, brains, etc). Physics is sensory-motor participation. Nothing more and nothing less. There is no such thing as 'information'. Craig -- You received this message because you are subscribed to the Google Groups "Everything List" group. To view this discussion on the web visit https://groups.google.com/d/msg/everything-list/-/xEjC88-mcZ4J. To post to this group, send email to email@example.com. To unsubscribe from this group, send email to everything-list+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/everything-list?hl=en.