In linguistics one sound implies a contrast with another. Whence the first, isn’t the question to galvanize the attention of generations of French literary theorists. Yes, maybe Descartes but he was technically before literary theory, and was also a spy. Hiding in a hut and thinking, the weasel loves that story!
Any pair has a sequence or the Cartesian Coordinate Plane wouldn’t work. Math language is compelling that those coordinates join geometry and algebra; sequencing is real. The weasel is certain that one follows another because of feet, and the sun rising, and seasons that parade in order. The Flicker broadcasting is a sure sign: amplify a great pounding to display prowess, impressed female will arrive, and in a few months there will be fledglings training at the backyard suet feeder.