This is a video of a short talk Carlo Rovelli gave on the Relational
Interpretation of Quantum Mechanics (RQM)
https://www.youtube.com/watch?v=syb3WfSGRoE
A more detailed account is given in this paper from a Royal Society meeting:
arXiv:1712.02894v5
Rovelli's RQM is an interesting alternative perspective -- similar to
QBism, but without the extreme instrumentalism of that approach. I think
that RQM contains some interesting insights, in particular, the
rejection of "object realism" about the Schrodinger wave function.
Following Dirac and Heisenberg, Rovelli thinks that the Schrodinger
equation is an essentially misleading attempt to render the discreteness
of the quantum in terms of a continuous wave. At best, the wave
function is simply a book-keeping device, keeping records of past
interactions.
I go along with much of this -- it is certainly better than QBism in
that it retains a viable form of realism -- but Rovelli comes seriously
unstuck when he attempts to give a fully local account of the EPR
correlations.......
arXiv:quant-ph/0604064v3
Bruce
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