Like Sankey diagrams, causal diagrams are a useful tool to assess and communicate complicated systems and their intrarelationships:

It’s possible to use these for analysis and prescription:

Here is the (promised) presentation on reenforcing loops:

So how can these techniques be used? And why are they powerful?

How about looking at methane adoption, also advertised as “natural gas” by fossil fuel companies.

There are other techniques similar to this, like analysis with stock and flow models: