by Anthony Fisher | Jun 30, 2017 | Letter of the Month
June’s letter of the month concerns various connections between modal logic and ordinary language. Does modal logic have its own source of intuitions? Is modal logic or ‘modal language’ as philosophers conceive of it a thing of its own? What is it exactly? In this...
by Anthony Fisher | May 31, 2017 | Letter of the Month
Soon after the publication of David Lewis’s On the Plurality of Worlds it received reviews in many journals by leading philosophers. In this letter Lewis replies to Philip P. Hanson’s 1986 review from Philosophy in Review, vol. 6, pp. 498-500. Lewis reacts...
by Helen Beebee | Apr 18, 2017 | Letter of the Month
April’s letter of the month, to Theodore Ziolkowski in May 1983, sees Lewis apparently comparing philosophy unfavourably with science. His starting point is an article in the Syracuse Scholar, ‘Pseudoscience’, by C.L. Hardin. (You can read the article here:...
by Anthony Fisher | Mar 31, 2017 | Letter of the Month
David Lewis famously proposed that counterpart theory can substitute quantified modal logic. He argued that instead of formalising modal discourse using modal operators we can stick with first-order predicate logic with identity so long as we introduce talk of...
by Fraser Macbride | Feb 26, 2017 | Letter of the Month
This letter to Davidson was written as Lewis was making significant strides away from the influence of Quine and beginning to wonder whether there really might be systematic and deep indeterminacy of thought and language, as Quine had claimed. By the time of “Radical...
by Anthony Fisher | Jan 31, 2017 | Letter of the Month
David Lewis is notoriously known for believing in the existence of concrete possible worlds equally real as our own. It came to be known as (genuine) modal realism. His systematic presentation and defence of the view appeared in On the Plurality of Worlds (Blackwell,...