This page is about phenomena that oscillate between different states, hiding one part from observation while exposing another, like the seasons of a year or the pig cycle in economics. The key component that binds these phenomena together as one, even though only parts of them are observable, is the distinction between their states. The notion of the distinction thus becomes an important concept not only in observing phenomena as holistic structures, but also in an understanding of the operational flow of these phenomena as processes. Therefore, we will dedicate space on this page to the study of distinctions and the phenomena they allow for. As a part of this, we will develop distinction analysis as a method to observe phenomena that are characterized by being constructed out of distinctions – which, as I would argue, is true for the observable world in its entirety. So welcome, and happy oscillating!