  Freud distinguishes human drives from instincts insofar as drives (unlike instincts) have no pre-given aim or object supplied by nature and follow no pre-set biological path. For those who inhabit a human world, drives might come to be attached to any number of aims or objects, and felt through any number of bodily locales. Drives, according to Freud, become specified in these ways through the mediation of ideas or representations. Human embodiment is thus imbued with opaque meaning, and sexuality emerges from a kind of instinctual inadequacy that presents desire as a difficulty or problem, and propels its increasing complexification.