Block Universe and Shadow Theory: Source, History, and Enacted Temporal Reality

How can a complete physical history contain a locally experienced temporal world? This paper integrates Shadow Theory with relativistic histories, distinguishing physical events from the records and relations available to embedded observers. Under an explicit enacted-experience account, retention, present contribution and anticipation acquire distinct roles within ongoing organization, without requiring a moving present or an external observer.

The paper develops physical constructions connecting quantum sources to delivery, retention and finite-time use, with exact accuracy limits and robustness bounds. It distinguishes classical records from coherent resources and shows why an entire passive local history can remain insufficient to predict intervention responses. A theorem in both 1+1 and 3+1 dimensional Minkowski spacetime establishes conditions under which one distinct reciprocal pair forces a universal relation. Its interpretation as universal co-reality requires independent justification. The resulting account supports a conditional block interpretation without claiming to prove eternalism or a deeper source beyond spacetime.