There is a rule in the world of remedies that has always struck me as unfair. The rule, generally speaking, is that damages are not available unless they can be proven with certainty. For example, suppose that I own a pub and hire a karaoke DJ for Friday night. Karaoke is popular in my town and I advertise the event widely. On Friday afternoon, however, the DJ breaches and I’m left without entertainment. During the night, patrons show up and ask about the DJ. Many of them express disappointment; some decide to remain and have a couple drinks but some leave right away. I bring suit for $1,000 in damages. Even though liability is clear in this case, I am not likely to recover a dime in damages because my estimate of damages is, in the eyes of the law, little more than conjecture. If this seems unfair to you, you’re in good company. In fact, some courts see it the same way and have tried to soften the “certainty” requirement by awarding damages that seem like a “good guess.” But the “good guess” approach has its own downside. Guesses are sometimes wrong—especially when the guesser stands to benefit from guessing too high. So what is a court to do?
Jack Preis, Calculating Damages in an Uncertain World, JOTWELL (April 7, 2017) (reviewing Tun-Jen Chiang, The Information-Forcing Dilemma in Damages Law (Wash. U. in St. Louis Legal Stud. Research Paper No. 16-08-03, 2016).