Prescribed substrate and physical causal structure

Scheduled containment needs a computational metric, channel supports, and a complete network. Periodic graph propagation can be anisotropic Fritz2013. Lorentz-equivariant association of a finite-valency graph to a Minkowski sprinkling has a separate obstruction BombelliHensonSorkin2009. Randomizing partitions is not a proof of physical causal dominance.

Scalar finite-propagation source records such as Em06-B CheungEm06B motivate accounting for compact causal pasts on finite time slabs. They do not derive a metric from this interface or transfer a scalar field equation.

Preferred-frame radiative effects require independent analysis Collins2004. The schedule theorem alone is not a Lorentz invariance certificate.