What I’d like to see developed is a theory of continuous-time causal models, which can address this sort of issue. It would also be useful to extend the calculus to continuous spaces of events. So far as I know, at present the causal calculus doesn’t work with these kinds of ideas.

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Can we formulate theories like electromagnetism, general relativity and quantum mechanics within the framework of the causal calculus (or some generalization)? Do we learn anything by doing so?

I'm really interested in these questions. (You might remember my agent with n sensors and m timesteps learning Huygen's principle from observing the evolution of the wave equation with various initial conditions.) I have some half-written ideas, but nothing in a state worth talking about.