thanks people.
i'm having some problem understanding what the ensemble interpretation says about an individual system before it is measured.It seems to take a realist stand - is that correct?
im a bit confused about which interpretation is experimentally favored,wave function collapse or the 'minimalist ensemble interpretation (ala L.E Ballentine' (as Doc Al wrote somewhere)?All the older literature talks about 'reduction of wave packet' but reading Ballentine has left me confused.