Advocates of this approach argue that since only quasi-local, essentially classical states survive the decoherence process, einselection can in many ways explain the emergence of a (seemingly) classical reality in a fundamentally quantum universe (at least to local observers). However, the basic program has been criticized as relying on a circular argument (e.g. by Ruth Kastner). So the question of whether the 'einselection' account can really explain the phenomenon of wave function collapse remains unsettled.