Last May, a former Columbia University student sued the university over the circumstances around Emma Sulkowicz’s widely publicized “Mattress Project,” in which Sulkowicz vowed to carry a mattress around campus so long as the plaintiff, a man named Paul Nungesser whom Sulkowicz had accused of sexual assault, remained on campus. Nungesser’s lawsuit was dismissed on Friday. In addition to the interesting tactical aspects of the case—most prominently Nungesser’s decision to sue Columbia, but not Sulkowicz, who if Nungesser is to be believed has been defaming him—the dismissal is an important result in the growing campus battles over efforts to try to enforce prohibitions against expression or restrict the ability to give offense. In that sense the dismissal is a welcome result.