"::::::::::::::::You say ""all accepted theories of fundamental physics are linear (with respect to the wavefunction)"". This is a false statement because nobody yet knows how the wavefunction relates to GR. GR not being quantum has nothing to do with it since GR is still a fundamental theory. The fact is as Penrose has stated that QM does not take account of gravity, and as such is likely useless at large scales together with MWI. -  |   

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