Autonomy Theory
The living philosophy-of-biology program nearest to this framework’s own — self-maintenance formalized as closure of constraints — and the narrow thing this framework adds, which is also the thing it has to prove.
Of the active research programs in the theory of biology, the autonomy tradition — Moreno, Mossio, Montévil and colleagues — is the closest to this framework’s account of what it is to hold oneself together. Where autopoiesis, its ancestor, described the living as self-producing, the autonomy tradition formalized it: an organism is a closure of constraints, a set of mutually-enabling constraints that collectively maintain the very conditions of their own persistence, and agency is the capacity of such a system to act so as to keep itself in existence. That is this framework’s sovereignty, reached first and reached rigorously. So this is a debt page, and the debt is large. The departure is narrow, and it doubles as the framework’s sharpest test: this framework reframes closure-of-constraints as an admissibility-and-cost structure and adds a ledger — who pays, how much, and the loss that is not inherited back. Whether that ledger yields a measurable the closure-of-constraints account does not already give, or merely re-notates it, is genuinely open — and as this tradition is itself now being asked whether it is a research program or a lens, this page says so.
What the autonomy tradition built
Closure of constraints
Montévil, M. & Mossio, M. (2015). Biological organisation as closure of constraints. Journal of Theoretical Biology, 372, 179–191.
The formal core. Separate processes (the thermodynamic flux passing through an open system) from constraints (structures that are conserved at the timescale of the processes they act on, and that channel them). A biological system is a closure of such constraints: each constraint is maintained by others in the set, and the set collectively maintains the conditions of its own persistence. Self-determination achieved while remaining thermodynamically open — a system that holds itself, at cost, far from equilibrium.
Biological autonomy, and agency
Moreno, A. & Mossio, M. (2015). Biological Autonomy: A Philosophical and Theoretical Enquiry. Springer. — and Virenque, L. & Mossio, M. (2024). What is Agency? A View from Autonomy Theory. Biological Theory.
The organism as a self-determining system that produces and maintains its own conditions of existence. On this base, agency is given a naturalized definition: the capacity of an autonomous system to control its interactions with the environment and adaptively modulate its own self-determining organization so as to maintain its existence. Not a metaphor for aliveness — a characterization of it.
What the framework shares — the debt, stated first
State it first and state it large: the autonomy tradition reached this framework’s core before it did, and in the register of rigorous philosophy of biology this framework is only beginning to match it. The overlap is not at the edges; it is at the center.
Where the framework draws its own line — the departure
The open question — and this page will not hide it
The autonomy tradition says what it is to hold oneself together. This framework tries to put a number on the holding. Whether the number is new information or a new name is the whole of the open question.
References
Montévil, M. & Mossio, M. (2015). “Biological organisation as closure of constraints.” Journal of Theoretical Biology, 372, 179–191. DOI: 10.1016/j.jtbi.2015.02.029. [verified]
Moreno, A. & Mossio, M. (2015). Biological Autonomy: A Philosophical and Theoretical Enquiry. Springer (History, Philosophy and Theory of the Life Sciences). ISBN 978-94-017-9836-5. [verified]
Virenque, L. & Mossio, M. (2024). “What is Agency? A View from Autonomy Theory.” Biological Theory, 19, 293–303. DOI: 10.1007/s13752-023-00441-5. [verified: title/venue/DOI; volume/pagination to confirm at proof]
DiFrisco, J. & Gawne, R. (2025). “Biological agency: a concept without a research program.” Journal of Evolutionary Biology. [verify volume/pagination before publication]