Id. Moreover, our role is not to question the correctness of the previous judgment, but rather to determine if the judgment was a final adjudication on the merits. See, e.g., Gleash v. Yuswak, 308 F.3d 758, 760 (7th Cir. 2002) (stating that "final resolution of one suit is conclusive in a successor, whether or not that decision was correct); Johnson v. Panizzo, 664 F. Supp. 336, 341 n. 8 (N.D. Ill. 1987) (explaining that the propriety of the substantive holding of the state court was not properly before the court because "under Illinois law claim preclusion applies without regard to whether the prior adjudication was correct or erroneous"); see also Bond v. Dunmire, 129 Ill. App.3d 796, 800 (1984) (explaining that res judicata operates irrespective of the correctness of the previous judgment). Under Rule 273, the involuntary dismissal issued on November 21, 2002 was an adjudication on the merits. Accordingly, all three elements of res judicata are satisfied.