Private Law Theory

ABSTRACT
This paper is a sequel to two of my previous works: my law review article ‘Coase’s Parable’ (Guerra-Pujol 2023) and my game theory paper ‘Modelling the Coase Theorem’ (Guerra-Pujol 2013). Here, I make three new contributions to the literature on Coase: (i) I describe Ronald Coase’s insight that harms are a reciprocal problem as an axiom or truism, (ii) trace the intellectual origins of this counter-intuitive idea to Coase’s undergraduate years at the London School of Economics, and (iii) explore the domain or outer limits of Coase’s reciprocal-harm axiom.

Guerra-Pujol, FE, Coase’s Fable (December 20, 2025).