6 Acknowledgments
I wish to thank Greg Anderson, Tom Banks, Robert Caldwell, Joanne Cohn, Gordon Chalmers,
Michael Dine, George Field, Peter Garnavich, Christophe Grojean, Jeff Harvey, Dragan Huterer,
Steuard Jensen, Gordy Kane, Manoj Kaplinghat, Bob Kirshner, Lloyd Knox, Finn Larsen,
Laura Mersini, Ue-Li Pen, Saul Perlmutter, Joe Polchinski, Ted Pyne, Brian Schmidt, and
Michael Turner for numerous useful conversations, Patrick Brady, Deryn Fogg and Clifford
Johnson for rhetorical encouragement, and Bill Press and Ed Turner for insinuating me into this
formerly-disreputable subject. This work was supported in part by the U.S. Department of
Energy.