The minimax argument represents game theory in its most elegant form: simple but with stark predictions. Although some of these predictions have been met with reasonable success in the field, experimental data have generally not provided results close to the theoretical predictions. In a...

Spam, or unsolicited email advertising, has been the scourge of email inboxes for nearly twenty years. Spam attempts to generate attention for a merchant’s products or services, but unlike most forms of advertising, spam does not provide users with valuable entertainment or other services in...