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Added by: Christopher MastermanAbstract:
Analytic philosophy in the mid-twentieth century underwent a major change of direction when a prior consensus in favour of extensionalism and descriptivism made way for approaches using direct reference, the necessity of identity, and modal logic. All three were first defended, in the analytic tradition, by one woman, Ruth Barcan Marcus. But analytic philosophers now tend to credit them to Kripke, or Kripke and Carnap. I argue that seeing Barcan Marcus in her historical context – one dominated by extensionalism and descriptivism – allows us to see how revolutionary she was, in her work and influence on others. I focus on her debate with Quine, who found himself retreating to softened, and more viable, versions of his anti-modal arguments as a result. I make the case that Barcan's formal logic was philosophically well-motivated, connected to her views on reference, and well-matched to her overall views on ontology. Her nominalism led her to reject posits which could not be directly observed and named, such as possibilia. She conceived of modal calculi as facilitating counterfactual discourse about actual existents. I conclude that her contributions ought to be recognized as the first of their kind. Barcan Marcus must be awarded a central place in the canon of analytic philosophy.
Bennett, Karen. Proxy ”Actualism”2006, Philosophical Studies, Vol. 129, No. 2, pp. 263-294.-
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Added by: Christopher James MastermanAbstract:
Bernard Linsky and Edward Zalta have recently proposed a new form of actualism. I characterize the general form of their view and the motivations behind it. I argue that it is not quite new – it bears interesting similarities to Alvin Plantinga’s view – and that it definitely isn’t actualist.
Comment: This article presupposes knowledge of actualism vs. possibilism debate, as well as some familiarity with quantified modal logic. It would be best to incorporate this text alongside Linsky and Zalta's 'In Defense of the Simplest Quantified Modal Logic' (1994). It is a perfect text for a more advanced undergraduate course on modal metaphysics or a masters course, particularly if you were wanting to spend more than a single week on actualism vs. possibilism.
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Janssen-Lauret, Frederique. Ruth Barcan Marcus and quantified modal logic
2022, British Journal for the History of Philosophy 30 (2):353-383.
Comment: This would be excellent supplementary reading for a course in modal logic or metaphysics which incorporated the work of Ruth Barcan Marcus. Clearly discusses her contribution to modal logic and metaphysics and discusses the history of this period of philosophy in depth.