Finally I must acknowledge the extraordinary efforts of Mark
Greenberg, my editor at HarperBusiness, and Mitch Tuchman,
my developmental editor, in improving this manuscript in so
many ways. I thank them both for their help in seeing this project
to fruition. I also owe thanks to Martha Jewett, who made helpful
comments on an early draft, and special thanks to Virginia Smith,
who proposed this project out of the blue.