In Conley v. Gibson, the Supreme Court announced its commitment to a liberal pleading regime in federal civil cases, and for decades thereafter was steadfast in resisting ad hoc heightened pleading rules adopted by lower courts. Thus, from 1957 until a few years ago, most litigants could count on surviving a motion to dismiss a complaint for failure to state a claim so long as their pleading provided some minimal notice to the defendant of the nature of their claim. Enter Ashcroft v. Iqbal and Bell Atlantic Corp. v. Twombly. Iqbal and Twombly, by many accounts, two-stepped the Court from notice to heightened “plausibility” pleading for all civil cases. And this shift garnered both applause and withering criticism. No one seems willing to de...