... A widely held (quasi-Kantian) stance in 20 th century philosophy of science maintains that scientific categories (e.g., 'planet,' 'bird')-and, by extension, social categories (e.g., 'legal court,' 'priest')-require the presupposition of a 'conceptual scheme': a system of concepts that organizes and gives meaning to experience. Conceptual schemes have been described under various names, including 'linguistic frameworks' (Carnap 1950), 'conceptual schemes' (Quine 1948(Quine , 1951(Quine , 1960Putnam 1981), 'forms of life' (Wittgenstein 1953;Feyerabend 1978Feyerabend , 1981, 'paradigms' (Kuhn 1962(Kuhn /2012, 'the web of belief' (Quine 1951;Ullian 1970/1978), 'research programmes' (Lakatos 1968(Lakatos , 1970, 'research traditions' (Laudan 1977), 'standpoints' (Harding 1986(Harding , 1991Wylie 2003Wylie , 2012, 'binary oppositions' (Levi-Strauss 1958/1963, 'ideologies' (Mannheim 1929(Mannheim /1936, 'thought collectives' (Fleck 1935(Fleck /1981, 'epistemes' (Foucault 1966(Foucault /1970(Foucault , 1969(Foucault /1972, 'networks' (Latour 1987(Latour , 2005, 'styles of reasoning' (Crombie 1981(Crombie , 1994Hacking 1992), 'perspectives' (Nagel 1986;Giere 2006;Massimi 2022), and 'relativized a priori principles' (Putnam, 1962(Putnam, , 1976(Putnam, , 1979Friedman 1999Friedman , 2001Tsou 2003Tsou , 2010Stump 2015). In philosophy of science, conventionalists about conceptual schemes (e.g., Poincaré 1902/2017, Carnap 1950, Quine 1951, Kuhn 1962) regard conceptual schemes as useful instruments (i.e., conventions) for predicting or explaining empirical phenomena, rather than theoretical systems that accurately represent reality. ...