It is difficult for me to believe that quantum mechanics, working very well for currently practical set-ups, will nevertheless fail badly with improvements in counter efficiency.

Long may Louis de Broglie continue to inspire those who suspect that what is proved by impossibility proofs is lack of imagination.

It is difficult for me to believe that quantum mechanics, working very well for currently practical set-ups, will nevertheless fail badly with improvements in counter efficiency.

No theory of reality compatible with quantum theory can require spatially separate events to be independent.