The consistency of consistent histories: A reply to d'Espagnat

This article is a response to various assertions made by B. d'Espagnat about the consistent history approach to quantum mechanics. It is argued that the consistent history interpretation allows for counterfactual definitions, does not imply that the future influences the past, is realistic according to d'Espagnat's own definition of that term, and provides a consistent substitute for classical logic in the quantum domain.