TL;DR
This paper critically examines the ontological questions in quantum mechanics, arguing that while strict ontology is elusive, practical measurement schemes can provide a useful 'FAPP Ontology' for understanding quantum phenomena.
Contribution
It introduces the concept of 'FAPP Ontology' in quantum mechanics, emphasizing practical measurement schemes over strict ontological commitments.
Findings
Strict ontology in quantum mechanics is unattainable.
Practical measurement schemes can establish a useful 'FAPP Ontology'.
The notion of 'FAPP Ontology' aids in interpreting quantum phenomena.
Abstract
The issue of ontology in quantum mechanics, or equivalently the issue of the reality of the wave function is critically examined within standard quantum theory. It is argued that though no strict ontology is possible within quantum theory, ingenious measurement schemes may still make the notion of a \emph{FAPP Ontology} i.e ontology for all practical purposes (a phrase coined by John Bell), meaningful and useful.
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