Abstract
We argue for teleology as a description of the way in which we ordinarily understand others' intentional actions. Teleology starts from the close resemblance between the reasoning involved in understanding others' actions and one's own practical reasoning involved in deciding what to do. We carve out teleology's distinctive features more sharply by comparing it to its three main competitors: theory theory, simulation theory, and rationality theory. The plausibility of teleology as our way of understanding others is underlined by developmental data in its favour.