Chapter 3 is about the social and semiotic mediation of experiential grounds. In particular, the way people interrelate the dimensions and degrees of their sensations and instigations, or experience and action. It offers a continuous time semiotics of such processes and uses this to critique widespread notions of materiality, as well as to better theorize the notion of affordances. It builds a bridge between ecological theories of perception and pragmatist notions of meaning.