 By contrast, practical wisdom does not make something separate the way craft does. Its province is doing (praxis) and not making (poiêsis). Presumably Aristotle is relying on a distinction between activity, whose end is in itself, and making, whose end is a product separate from the activity of making. When someone plays the flute, e.g., typically there is no further product of playing; playing the flute is an end in itself. However, when one makes a house, e.g., the activity of making a house is not an end in itself but has a product, which is separate from the activity. This distinction is clearer in the opening paragraphs of the Nicomachean Ethics. There Aristotle says that each technê, investigation, action (praxis), and undertaking seems to aim at some good. The ends vary, however; some ends are the activities themselves and some ends are products (erga) beyond the activities. As examples of these latter kinds of ends, he cites health as the end of medicine, a ship as the end of shipbuilding, and victory as the end of generalship; these ends are products separate from the respective activities (1094a5–10). 