>But the researchers concede that the result will make no difference to anyone who believes in Many-Worlds, Copenhagen, or Pilot-Wave Theory. It only reduces the range of options by one, at most.
This is a bit too pessimistic. There's the possibility their experiment will confirm local realist retrocasuality (by finding a result different from what typical QM would suggest) - at which point we will have reduced the options considerably.
This is a bit too pessimistic. There's the possibility their experiment will confirm local realist retrocasuality (by finding a result different from what typical QM would suggest) - at which point we will have reduced the options considerably.