Twilight of The Genealogy? Or a Genealogy of Twilight? Saving Nietzsche’s Internalization Hypothesis from Naïve Determinism

The Internalization Hypothesis (I.H.), as expressed in GM II 16 of On the Genealogy of Morals, is the essential albeit under-theorized principle of Nietzsche’s psychology. In the following essay, I investigate the purpose I.H. serves concerning Nietzsche’s theory of drives as well as the Hypothesis’s epistemic warrant. I demonstrate that I.H. needs a Neo-Darwinian underpinning for two reasons: 1) to answer the Time-Crunch Problem of Transformation, and 2) in order to render it coherent with Nietzsche’s physiological determinism as articulated in Twilight of the Idols. My re-examination of I.H., then, serves to underwrite the Hypothesis on solid empirical footing. In addition, my analysis provides further evidence to think that Brian Leiter’s initial (but naïve) type-fact reading of Nietzsche’s philosophy of psychology is accurate, deterministic warts and all.