Pareto is well known for his 80-20 split; he's less well known for dividing bases for action into residues (sentimental bases, differing largely by whether one

Pareto is well known for his 80-20 split; he's less well known for dividing bases for action into residues (sentimental bases, differing largely by whether one is conservative or progressive by inclination) and derivations (the logical rationales one gives for proposed or taken actions). Homo sapiens or Homo praetexendo?