Jonti said:And surely it makes no sense to have a purely informatic (ie. an abstract mathematical) wave motion without a corresponding physical medium? Like the ether, for example.
Well its this problem, amongst other problems that the mathematical formalism adresses. The wave is described in terms of particles in complex superposition rather than vibrations of a medium. This is not divorced from physical reality - it rather divorced from natural interpretation.
Incidently I think photons at least are always (someone jump in here if I'm wrong!) produced by oscillations of charged particles eg. electrons or ions. Furthermore a photon can cause a charged particle to oscillate. So the oscillations that are described by the theory are quite real.
Jonti said:Abstractions are just useful things that exist in our heads.
Yes so they should be secondary to physical phenonmenon in question otherwise they would not be useful.
By the way, while I'm saying all this, Zeilinger and Bruckner have brought quite an original theory to the table and if it helps you understand quantum mechanics then all the better. In particular the argument about Shannon information only applying when there is a definite objective reality and the propostion that a new form of information is necessary is quite brilliant especially since they have made it workable.
I just think that:
1) The measurement problem is not solved but rather swept under the carpet.
2) Insofar as the new description can account for the wave-like behaviour of quantum particles it merely adopts a new formalism which is more baroque than the old formalism.
Thus:
3) The theories do not represent a new paradigm but rather the old one with either an incomplete or unnecessarily complex formalism. Although it is arguarble that the axioms are more intuitively acceptable, but that's a matter of taste.