Shannon/Weaver and Mediated Communication

I've had a few images floating around in my head. The root of one stems from a conversation she had where somebody asked her to relate Activity Theory to the Shannon-Weaver model for information. Here's my take on it. I'm not fully sure how to describe it yet but I'm fascinated at how people can only communicate through some sort of material artefact. That same artefact may similarly support activity and cognition. Hmmm...