  In addition to the technical sense of coupling, philosophers often appeal to a looser sense when defending Constitution. Clark, for instance, discusses the process of writing. When writing, “[i]t is not always that fully formed thoughts get committed to paper. Rather, the paper provides a medium in which, this time via some kind of coupled neural-scribbling-reading unfolding, we are enabled to explore ways of thinking that might otherwise be unavailable to us” (2008, 126). Clark’s idea is that the cognitive system that produces writing extends beyond a subject’s brain, to include among its constituents the paper on which words are written. The paper and the acts of reading and writing are literally parts of the cognitive process, no less than neural processes, because of the continuous interactions between all of these things. If it were possible to provide differential equations that describe the production of writing, they would include terms referring to the behaviors of each of these things. Thus, the reasoning that brings us to the conclusion that the components of a centrifugal governor are constituents of a single system, and that predator and prey are constituents of single system, leads also to the conclusion that the constituents of many cognitive systems will include parts of the body and world.