Second, a class action may overcome "the problem that small recoveries do not provide the incentive for any individual to bring a solo action prosecuting his or her rights". "Amchem Prods., Inc. v. Windsor", 521 U.S. 591, 617 (1997) (quoting "Mace v. Van Ru Credit Corp.", 109 F.3d 388, 344 (7th Cir. 1997)). "A class action solves this problem by aggregating the relatively paltry potential recoveries into something worth someone's (usually an attorney's) labor." "Amchem Prods., Inc.", 521 U.S. at 617 (quoting "Mace", 109 F.3d at 344). In other words, a class action ensures that a defendant who engages in widespread harmbut does so minimally against each individual plaintiffmust compensate those individuals for their injuries. For example, thousands of shareholders of a public company may have losses too small to justify separate lawsuits, but a class action can be brought efficiently on behalf of all shareholders. Perhaps even more important than compensation is that class treatment of claims may be the only way to impose the costs of wrongdoing on the wrongdoer, thus deterring future wrongdoing.