I tend to simplify and synthesize the functional description of systems down to four elements. For me this has proven the simplest useful description of how things work. These elements are the same as the classical four elements: fire, water, air, earth and as the suits of playing cards: clubs, hearts, spads, and diamonds.
Over the years I’ve layered so many different systems and processes over the four elements have become a kind of metaparadigm for me. I connect the parts of an interaction system relating to desires and intention with fire, feeling and perceptions with water, objectivity and analysis with air, and finally, physical reality and action with earth.
Written for an audience slightly less knowledgeble than this one, I suppose.