I've had the same thought but then gave up because it's not even a single graph: we assume it's a single graph because some parts of "concept - connection - con

I've had the same thought but then gave up because it's not even a single graph: we assume it's a single graph because some parts of "concept - connection - concept" tuples...but that fails to capture the reality that the aggregate behavior of a system can implement a wholly different behavior. A practical example of this would be neural networks in AI: which collectively implement functions much greater then the individual links.