Former economist Paul feldman started delivering breakfast to office parks. He kept a spredce that had all the information relevant to the situation. Marginal cost is price of producing or selling one additional unit, one more doughnut or bagle. It turns out it's really hard to observe marginal cost for firms.
The British art superstar Flora Yukhnovich, the Freakonomist Steve Levitt, and the upstart American Basketball Association were all unafraid to follow their joy — despite sneers from the Establishment. Should we all be more willing to embrace the déclassé?