What C-C Fallacy? 7

In the cases we describe, by contrast, the relevant external features are active, playing a crucial role in the here-and-now.  Because they are coupled with the human organism, they have a direct impact on the organism and on its behavior.  In these cases, the relevant parts of the world are in the loop, not dangling at the other end of a long causal chain.  Concentrating on this sort of coupling leads us to an active externalism (Clark & Chalmers, 1998, p. 9)

Again, it looks like the existence of a coupling relation is what Clark and Chalmers think justifies extended cognition.