  For pure interpretivism, interpretive hypotheses are such tests and are designed to support the relevant theoretical choices. The hypotheses appeal to principles of political morality that justify some particular aspect of the institutions’ action having a role as a determinant of rights and obligations. By doing so, they aim to establish, for each candidate determinant of law, its precise impact on the law, including its impact when some other candidate pulls in a different direction (cf. Dworkin 1985, 1986, 1998; Greenberg 2004; Stavropoulos 2013).