Optionality Accounting: A Conservation Law for Future Freedom in Complex Systems

This paper introduces optionality accounting as an architectural primitive for complex systems. We define optionality as a finite stock of feasible future trajectories and characterize commitments as operators that consume optionality by restricting future state space. We show that systemic failure frequently arises not from incorrect decisions or misaligned incentives, but from unrepresented optionality depletion—so-called silent lock-in.

Optionality accounting does not prescribe governance, optimization, or policy mechanisms. Instead, it defines a pre-normative architectural requirement: systems must represent how present commitments constrain future freedom prior to irreversible lock-in. We formalize commitments, reversibility, and lock-in effects using minimal system-theoretic constructs, and map downstream phenomena such as exit loss, path dependence, and policy ossification to untracked optionality expenditure.

The contribution is diagnostic and structural. It isolates a failure mode that persists even under competent actors, accurate information, and corrective intent, and explains why downstream interventions routinely fail once optionality has already been spent.