There placed was a caudron wide and tall Upon a mightie fornace, burning whott

These include: 1) the idealist treatment of science in terms of concepts and problems (Eucken's Geistiger Posirivismus); 2) varieties of the neo-Comtean program of naturalistic metaphysics, which often included Spinoza-like claims of panspirituality in the hands of the Leipzig Positivists and the Monist League (Wilhelm Ostwald figured prominently in both groups); 3) the extension of norms of particular sciences to culture, such as medical ideas of health and pathology, as one finds in Kraepelin's notion of the social body or the social Darwinist prescriptions in the Zeitschriftfiir Soziahinssenschaft;...

Fuzzy sets are used when the causal conditions and outcomes are multichotomies, namely, they vary by level of degree.

I had thought that the term was a nonce, but it seems as if it's been picked up by other authors.