case positivism began inclusivist theory influential exclusive legal positivists including joseph raz john gardner leslie green later rejected idea second important debate often called hart dworkin debate ref name ref concerns battle two dominant schools late th early st century legal interpretivism legal positivism normative jurisprudence addition analytic jurisprudence legal philosophy also concerned normative theories law normative jurisprudence involves normative evaluative otherwise prescriptive questions law ref name ref example goal purpose
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