Barney shows that, contrary to what Aristotle claims, there is no difference between poiesis and praxis.

Barney defends Plato's account of function over Aristotle's.

Barney worries that, on the "architectonic reading," no action is an aim in itself.

Barney claims that Aristotle's ethics must be strictly separated from his biology.

Barney claims that Aristotle's function argument is outdated.