ROBERT DISALLE is Associate Professor of Philosophy at the University of Western Ontario. He completed his Ph.D. at the University of Chicago under Howard Stein's supervision. He works on the history and philosophical foundations of theories of space and time.
MICHAEL FRIEDMAN is currently Ruth N. Halls Professor of Arts and Humanities at Indiana University and Frederick P. Rehmus Family Professor of Humanities at Stanford University. His publications include: Foundations of Space-Time Theories (Princeton University Press, 1983), Kant and the Exact Sciences (Harvard University Press, 1992), Reconsidering Logical Positivism (Cambridge University Press, 1999),A Parting of the Ways: Carnap, Cassirer, and Heidegger (Open Court, 2000), and Dynamics of Reason (Center for the Study of Language and Information, 2001).
WILLIAM L. HARPER is Professor of Philosophy at the University of Western Ontario. He has written a number of papers on Newton's argument for universal gravitation, and the continuing use of Newton's methodology in relativistic gravitation theory. He is presently at work on a book to be titled Newton's Argument for Universal Gravitation: A Case Study of Turning Data into Evidence.
GEOFFREY HELLMAN is Professor of Philosophy at the University of Minnesota (Twin Cities). He is the author of Mathematics without Numbers: Towards a Modal-Structural Interpretation (Oxford University Press, 1989), the co-editor (with Richard Healey) of Quantum Measurement: Beyond Paradox (University of Minnesota Press, 1998), and the author of numerous articles on philosophy of mathematics, philosophy of logic, philosophy of quantum mechanics, and philosophy of science.
ISAAC LEVI is John Dewey Professor of Philosophy at Columbia University. He has worked on a decision theoretic approach to belief change, on an account of indeterminate probabilities and utilities together with an accompanying account of