A philosopher with this first name formulated a position that is “extended” in the work of Takashi Yagisawa. A philosopher with this first name wrote a paper “Debugg[ing]” a concept named for another philosopher with this first name. A philosopher with this first name wrote a “Search of a Fundamental Theory” that popularized his terminology of an “easy” and a “hard” problem (15[1])of a certain concept and, with Ned Block, co-directs the NYU Center for Mind, Brain, and (*) Consciousness. A view named for a philosopher with this first name and supervenience was advocated, along with modal realism, by a philosopher with this first name and the last name Lewis. A philosopher with this first name argued causation is actually constant conjunction of events. For 10 points, give this first name of philosophers Chalmers and the Scottish author of An Enquiry Concerning Human Understanding, Hume. ■END■