The more obvious forms of corruption are often preceded and explained by the etiolation of a practice: as its participants lose track of the point of their activities, their moral immune system is disabled. The argument is developed via a case study, philosophy itself. After advancing the hypothesis that philosophy is in the first instance the machine tool industry of the intellect—that its task is making the intellectual tools that make the intellectual tools—we consider what becomes of such an enterprise when this objective slips out of focus.