Propensities

Nuel Belnap

Mauricio Suárez

Michael L. G. Redhead

Vladimír Havlík

The article deals with Popper's propensity interpretation of probability in the context of his metaphysical epilogue to Schisma of physics. The analysis is devoted to Popper's conjecture about propensity and indeterminism, to description of the new picture of physical reality and to the new metaphysical program of propensity cosmology.

Weinert, Friedel

The purpose of this paper is to revisit a neglected understanding of quantum mechanics, the so-called propensity theory and to propose a amended version of it. According to this version, the causal-structural approach adopted here, a quantum system has a physical structure, consisting of relata (components, say electrons) and relations (determining the interrelations between the components). This structure is mathematically encoded in wave functions and forms the base, on which propensities supervene. This paper proposes that propensities or intrinsic dispositions supervene on the structural properties of the system. A propensity is a disposition of a quantum system to display selective aspects in response to an encounter with a measurement situation. The selective propensities manifest themselves as probabilities, in accordance with the application of the Born rule to respective wave functions.

Sang-rok Lee

Propensity Theory proposes a foundational root theory encompassing quantum mechanics within a unified deductive framework. Starting from propensity as a fundamental ontological category, the theory explains all phenomena through a five-stage cycle of bond formation and dissolution. Numerical simulations across six quantum phenomena show agreement with established predictions. The theory also introduces Propensity Induction — a methodology for actively designing phenomena. Includes Author's Clarifying Notes on pluralistic realism and the genesis of information.