   Note that the set of commitments that Reid refers to as “The Way of Ideas” and the “Ideal Theory” is drawn form the work of Locke, Berkeley, Hume and many others going back to Plato and Aristotle. Its principle commitment is to mental representations, called ‘ideas’ or ‘images’, that are believed to mediate all our experience of the world—from conception to memory and perception. Reid regards the Way of Ideas as founded on a flawed, anti-Newtonian methodology, is unscientific, and he argues that it has highly undesirable consequences.