Samuel David Epstein is Associate Professor of Linguistics at the University of Michigan. He is co-founder of Syntax: A Journal of Theoretical, Experimental and Interdisciplinary Research and has published widely on syntactic theory. He is the author of Traces and Their Antecedents (1991); co-author of A Derivational Approach to Syntactic Relations (with E. Groat, R. Kawashima, and H. Kitahara, 1998); and co-editor of Working Minimalism (with N. Hornstein, 1999). T. Daniel Seely is Associate Professor of Linguistics at Eastern Michigan University. His work on syntactic theory has appeared in journals such as Linguistic Inquiry and Word, and he is a former moderator of The Linguist List.