The book considers in detail a paradigm case: legal normativity as constructed by Hans Kelsen. This case exemplifies the problems with normativist arguments. But it also shows how normativism was constructed as an alternative to ordinary social science explanation. The normativist argument is that social science explanations themselves are forced to rely on normative conceptsÑminimally, on normative rationality and on a normative view of 'concepts' themselves.
Empathic understanding of the reasoning and meanings of others, however, can solve the regress problems about meaning and rationality that are central to the appeal of normativism. This account has no need for a parallel normative world, and has a surprising and revealing lineage in the history of philosophy, as well as a basis in neuroscience.