Edward MacKinnon

An epistemological interpretation of quantum mechanics hinges on the claim that the distinctive features of quantum mechanics can be derived from some distinctive features of an observational basis. Old and new variations of this theme are listed. The program has a limited success in non-relativistic quantum mechanics. The crucial issue is how far it can be extended to quantum field theory without introducing significant ontological postulates. A C*-formulation covers algebraic quantum field theory, but not the standard model. Julian Schwinger’s anabatic methodology extended a strict measurement-based formulation of quantum mechanics through field theory. His extension also excluded the quark hypothesis and the standard model. Quarks and local gauge invariance are postulates that go beyond the limits of an epistemological interpretation of quantum mechanics. The ontological significance ascribed to these advances depends on the role accorded ontology.

In the course of his long development, Kant's concept of matter changed somewhat, while his concept of scientific explanation changed considerably. Both developments achieved a coherent integration in Kant's Metaphysical Foundations of Natural Science. Using this developmental background, the present paper argues that the Foundations should be interpreted as an attempted rational reconstruction of the mechanics of Newton and Euler. Kant attempted to do this by constructing a concept of matter that would confer a Leibnizian intelligibility on Newtonian mechanics, and also accord with Kant's theories on the nature of concepts and their role in scientific explanation.

The revolt against logical positivism within the philosophy of science has now lasted long enough to produce something of a counter-revolution. As the more strident charges (positivistic analyses misrepresent the most fundamental features of the scientific enterprise and have contributed little or nothing to its clarification) and counter-charges (any attempt to induce a philosophy of science from studies in the history of science rests on a massive genetic fallacy) gradually subside, critical interest is focussing on the presuppositions that guide and structure various interpretations of science. Here epistemological positions, often implicitly assumed, play a pivotal role. In the present article we shall try to make different positions and presuppositions explicit by examining some current developments in the philosophy of science. This examination will be focused on, though not limited to, three recent books by I. Schefller, S. Körner, and E. Harris.