Philosophy 192-04 / David Lewis's On the Plurality of Worlds
and the Metaphysics of Modality
/ David Denby / 6
This is a seminar in metaphysics, intended primarily for graduate students and majors in philosophy, though it should be suitable for others with sufficient philosophical background (ask!) We will critically examine David Lewis's (1986) On the Plurality of Worlds, one of the best and most important recent works of analytic metaphysics. We will also read some of the huge secondary literature that it has generated and some material from the 1970s to which it is a response. The consequences of Lewis's discussions have rippled across other areas of philosophy and we will examine some of these consequences too. The class is small (15 maximum), so it should provide a congenial forum for philosophical debate.
On the Plurality of Worlds is an extended defense of "modal realism", the extraordinary thesis that there is a vast plurality of universes that are just as concrete and as real as our own universe and among whose inhabitants are every possible thing in every possible state, combination, and arrangement. Lewis argues that modal realism has great philosophical utility, greater than any rival theory, and that's why we should believe it. He sets it out in detail, explains its utility, discusses objections, and states, explains and reveals problems with rival theories. He also touches on a number of questions whose significance stretches beyond the metaphysics of modality to metaphysics and philosophy generally.
I hope that by the end of the seminar we will understand and be in a position to evaluate modal realism and its rivals. I also hope that we will better understand key aspects of Lewis's overall philosophy. He is, after all, a dominant figure in contemporary analytic philosophy, especially metaphysics. And I hope we will solidify our grasp of basic philosophical techniques and methodology; On the Plurality of Worlds is a model of good analytic philosophy. Finally, I hope we'll have fun. The book is beautifully written in Lewis's characteristically limpid and disciplined prose, and the ideas are brilliant and gripping.
Philosophy 195-01 / Biological Foundations of Language / Ray Jackendoff / I+IF
Philosophy 195-01 / Recitation / I+F
A prominent claim in modern linguistics is that the human ability to learn and use language is a specialized cognitive capacity, rather just a consequence of having a large brain. This course will address the evidence for this claim, based on the character of language, language learning, and language disability. It will also address the degree to which the language faculty draws on other cognitive capacities, the relation of language to forms of animal communication, and hypotheses about the evolution of the language faculty. Prerequisite: PHIL 15/PSYC 64 or consent.