Yes, he is “working towards” – I would put it as a “towards a theory of iconicity” or something but I don’t think it’s complete. I mean, it’s enough for a life’s work and to give ted talks and write books; but it’s flawed in that it doesn’t address the fact of programmers who are aware of the assembly language and can break it down to the bare metal level if necessary; in the icon theory it does not allow for that