The Law of Observation: A Constraint-Pruning Framework (One-Page Technical Summary)

This document presents a concise formulation of the Law of Observation, a substrate-independentphysical principle: observation exists whenever a system irreversibly eliminates possible futures. Ob-servation is not an act, not consciousness-dependent, and not specific to biological systems. It is aphysical condition arising from irreversible constraint pruning acting on a space of possible histories.The law is indifferent to ontology. Whether a system is base reality, simulation, or memoryfragment is irrelevant. What matters is not origin or material composition, but what the systemcannot undo.