Abstract
On September 11, 2001, as everyone knows, the towers of the World Trade Center in New York were attacked. I want to discuss this event in order to motivate a nonreductionist view of the extensions of everyday concepts. Next, I shall set out, and begin to defend, the particular view of nonreductionism that I favor—the Constitution View. Then, I shall consider two venerable metaphysical issues (the nature of vagueness and the mind-independent/mind- dependent distinction) in light of the Constitution View. If the Constitution View is correct, then everyday concepts are a good guide to reality. My aim is to offer a metaphysical theory that acknowledges the genuine reality of what our everyday concepts (as well as our scientific concepts) are concepts of.