Hannah Arendt, the midcentury philosopher and Holocaust refugee, conceived her theory of the banality of evil in a Jerusalem courtroom while covering the 1961 trial of Nazi war criminal Adolf Eichmann.As a defendant, Eichmann, a man who never finished high school and had failed at everything he touched until he excelled — historically — in the logistics of genocide, was so mundane, self-centered and insipid that Arendt describes a “dilemma between the unspeakable horror of the deeds and the undeniable …