Matthias Egg (2021) argues that scientific realism can be reconciled with quantum mechanics and its foundational underdetermination by focusing realist commitments on 'effective' ontology. I argue in general terms that Egg's effective realism is ontologically overly promiscuous. I illustrate the issue in relation to both Newtonian mechanics and quantum mechanics.
Keywords: Effective ontology; Matthias Egg; Quantum mechanics; Scientific realism.
© The Author(s) 2022.