Aristotle's Investigation of a Basic Logical Principle: Which Science Investigates The Principle of Non-Contradiction?

Aristotle shares with Plato the attitude that the world, 'the all/ is a kosmos, a well-ordered and beautiful whole which, as such, can be rendered intelligible, or understood, by the intellect. One understands things, generally speaking, by tracing them back to their sources, origins or principles (apxoct) and causes or explanatory factors (atxiat), and seeing in what manner they are related to these principles. We know, or understand, a thing when we grasp 'the why' or cause.1 Consequently,