Unlike the Vienna Circle or the Frankfurt School, the Pittsburgh School was never self-consciously constituted as a coherent or even semi-coherent group by adopting this label. Rather, it seems to have been chosen as a retrospective name that functions to draw our attention to three prominent twentieth- and twenty-first-century philosophers whose work exhibits important commonalities and whose influence has been considerable: Wilfrid Sellars (1912–89), Robert Brandom (1950–), and John McDowell (1942–).