Aging: The Running Cost of the Chisel-Construct Cycle
A Self-as-an-End Meta-Proposition

Writing Declaration: This paper was independently authored by Han Qin. All intellectual decisions, framework design, and editorial judgments were made by the author.

Abstract

Companion papers argued that consciousness discontinuity is a constitutive condition of subjecthood, and that sleep, meditation, and flow constitute a toolkit for managing the 12DD predictive cache. This paper pushes the same chain of logic to the ultimate scale, addressing a fundamental question: can aging be eliminated? The SAE framework's answer: for high-complexity, self-bearing organisms, aging is extraordinarily difficult to stop, extraordinarily difficult to reverse globally, but can be significantly delayed — and the ceiling of delay may be much higher than currently assumed. The reason lies not in any single biological mechanism but in a structural constraint of the chisel-construct cycle itself: the operation of self requires 12DD prediction, prediction requires synaptic plasticity, plasticity requires protein synthesis and degradation, synthesis and degradation require energy metabolism, and energy metabolism produces irreversible byproducts. Each cycle of the chisel-construct process consumes the maintenance system's capacity, while the maintenance system's efficiency at maintaining itself also declines. This is recursive degradation: the tool of repair is itself aging.

This paper proposes a second-order model of aging: aging is not the over-accumulation of damage to the maintained object (first-order) but the progressive failure of the maintenance system itself (second-order). This model unifies cognitive aging at the 12DD level (changes in synaptic plasticity rules, declining downscaling efficiency) and bodily aging at the channel level (deteriorating proteostasis, declining autophagy efficiency, telomere shortening). The core strategy for delaying aging is not "repairing damage" but "reducing the maintenance system's load" — enabling the maintenance system to operate effectively for a longer window. Local rejuvenation through partial reprogramming, senolytics, and stem cell replacement offers genuine hope for extending that window further.

The paper presents a testable non-trivial prediction: prolonged disorders of consciousness (DoC) patients' brains, in cortical regions most associated with 12DD–14DD activity, may show slower aging pace than age-matched healthy controls — after strict matching for injury type, disease course, and inflammatory burden. If supported, this has profound nurturing implications: DoC patients' brains may be "younger" than those of age-matched peers, strengthening the case against premature withdrawal of care.

Keywords: aging, chisel-construct cycle, Self-as-an-End, second-order model, maintenance system, cognitive aging, synaptic plasticity, disorders of consciousness, DoC prediction, thermodynamics