The Self as a Coordination Solution for an Efficient Brain

Read Montague's efficiency paradox identifies a fundamental tension in any complex adaptive system: coordination among subsystems requires communication, but communication is metabolically costly, so the system must maximize coordination while minimizing the bandwidth it consumes. These demands directly oppose each other. The resolution lies in mutual modeling — subsystems that maintain Internal models of one another can predict each other's behavior and coordinate without continuous signaling, much as deeply familiar collaborators can act in concert with minimal explicit exchange.

These mutual models degrade without periodic recalibration, which necessitates a cycling regime: Phases of autonomous, model-driven operation alternating with Phases of inter-subsystem checking and updating. This pattern maps precisely onto the observed alternation between task-positive networks and the default mode network (DMN) in neuroscience. The DMN, far from representing cognitive idleness, functions as the brain's mutual-model maintenance system — subsystems correcting their representations of one another during apparent rest.

The critical move is recognizing what happens as mutual modeling scales across temporal hierarchies — from online attentional coordination, through medium-term planning, to the slow timescales of character and personality. A higher-order model emerges that can coordinate Relevance realization across all these timescales simultaneously. This generalized self-model, performing recursive meta-coordination, is arguably what the phenomenological tradition calls the self. The self does not precede the process as some Ontological primitive; it is the process viewed from the first-person perspective — an emergent coordination structure that exists precisely because the efficiency paradox demands it.