Consciousness: A Structural Consequence of Ordered Change

Consciousness is the second layer of the Unified Mind Architecture (UMA). This paper defines consciousness as the present‑state architecture that stabilizes the observer and maintains continuity across representational change. Unlike cognition, which establishes ordered state, consciousness establishes present state, the structural condition that allows a mind to exist as a unified observer rather than a sequence of disconnected transitions. The paper formalizes the structural requirements for present‑state unification, the conditions under which an observer maintains continuity, and the architectural boundaries that separate conscious systems from non‑conscious ones. Consciousness is presented as a substrate‑independent but structure‑dependent mode, emerging only when the necessary architectural constraints are satisfied. This work positions consciousness as an explicit, diagnosable layer within UMA, providing the foundation for the subsequent layers of intelligence, agency, and closure. It establishes the structural criteria that distinguish conscious architectures from systems that merely simulate or approximate aspects of conscious behavior.