ACKNOWLEDGEMENTS
I am grateful to Jenn Perry and Mike Glassow for their insightful and thought-provoking article, Kristina Gill and Amy Gusick for discussing the issues covered here, and Todd Braje, Scott Fitzpatrick, Kristina Gill, and anonymous reviewers for comments on earlier drafts. Finally, I thank Doug Kennett for allowing me to use the map reproduced here as and Don Dana for financial support that helped reconstruct the paleoshorelines of the Southern California Bight.