Part of the series: APS and Contemporary Theories

Autopoiesis represents one of the most influential developments in modern theoretical biology. By shifting attention away from constituent components and toward organisational processes, it transformed discussions of life, individuality, cognition, and biological explanation. Rather than asking what living systems are made of, autopoietic theory asked how living systems continuously generate and maintain themselves as organised unities. This shift from substance to organisation remains one of the foundational achievements of contemporary biology.

APS fully accepts the importance of this organisational turn. The recognition that living systems are organisationally constituted rather than reducible to their material components forms part of the intellectual foundation upon which APS is built. Yet APS also argues that self-production alone cannot fully explain the distinctive character of living organisation. Questions concerning regulation, agency, viability, historical continuity, and evolution require additional conceptual development beyond the original autopoietic framework.

Understanding this relationship is important because APS should not be understood as rejecting autopoiesis. Rather, APS develops a line of theoretical inquiry that began with autopoiesis, was subsequently extended through autonomy theory, and continues through contemporary organisational approaches to biology. The question is therefore not whether autopoiesis was correct, but whether self-production alone is sufficient to explain life.

The Autopoietic Insight

The central insight of autopoiesis is that living systems are organised networks of processes that continuously produce and maintain the components required for their own continued existence. Organisms are not assembled from externally coordinated parts in the manner of machines. Instead, the activities occurring within the system collectively regenerate the organisational conditions that make those activities possible.

This proposal represented a major departure from both mechanistic and substance-based accounts of life. Biological identity no longer depended upon particular materials, molecular inventories, or externally assigned functions. Instead, identity arose through the continual reproduction of an organised network of processes. A living system remained the same system not because its material constituents remained unchanged, but because its organisation persisted through continual renewal.

The importance of this shift cannot be overstated. Autopoiesis redirected attention toward organisation as an explanatory category in its own right and helped establish many of the conceptual foundations upon which later organisational approaches would build. Contemporary discussions of autonomy, agency, normativity, and biological individuality all owe an intellectual debt to this transformation.

APS therefore accepts the core autopoietic insight. Living systems cannot be adequately understood through their constituent components alone. Biological explanation must account for the organisational relations through which living systems continuously maintain themselves as living systems.

What Autopoiesis Explains Well

Autopoiesis successfully explains several fundamental features of living organisation. First, it explains why living systems possess a distinctive form of organisational unity. Organisms remain identifiable despite continual material turnover because their organisation is continually regenerated through ongoing activity. Persistence therefore depends upon organisational continuity rather than material permanence.

Second, autopoiesis explains why living systems differ from externally assembled artefacts. Machines may continue functioning despite the replacement of particular parts, but their organisation is imposed from outside. By contrast, living systems continuously contribute to the production and maintenance of their own organisational conditions. Their organisation is generated from within rather than externally imposed.

Third, autopoiesis established that biological organisation should be treated as explanatorily significant rather than as a secondary consequence of underlying mechanisms. This insight helped restore organisation to a central position within theoretical biology and provided an alternative to both reductionist and purely component-based approaches.

These achievements remain foundational. APS agrees that living systems are organisationally constituted, that self-production plays a central role in biological persistence, and that organisational relations possess genuine explanatory importance. The question is therefore not whether autopoiesis captures something essential about life. It clearly does. The question is whether self-production alone explains everything that requires explanation.

Beyond Self-Production

The major limitation of autopoiesis is not that it explains the wrong phenomenon but that it explains only part of the phenomenon. Self-production accounts for how living systems generate and maintain their own organisational unity, but it does not by itself fully explain why particular organisational states matter to the system, how systems regulate themselves under changing conditions, or how organisms actively engage with the environments upon which their persistence depends.

These questions become particularly important when considering biological normativity. Living systems continuously distinguish between conditions that support continued existence and conditions that threaten it. Some organisational states contribute to persistence, while others undermine it. Success and failure therefore possess an intrinsic significance that cannot be reduced simply to the existence of self-producing processes.

Similarly, living systems do not merely reproduce their organisation. They regulate internal activity, modify relationships with their environments, compensate for perturbations, and actively secure conditions favourable to continued existence. Such activities suggest that biological organisation involves more than self-production alone. Organisms must also be understood as systems capable of regulating and directing activity in relation to the requirements of viability.

These considerations motivated the development of autonomy theory and subsequent organisational approaches. The challenge was not to abandon autopoiesis but to extend its insights in ways capable of addressing regulation, normativity, agency, and persistence more explicitly. APS emerges from this broader trajectory of theoretical development.

From Autopoiesis to Autonomy

The limitations of self-production did not lead organisational theorists to abandon the autopoietic project. Instead, they motivated a series of developments that sought to clarify how living systems maintain themselves, regulate their activities, and preserve their organisational integrity under changing conditions. These developments eventually gave rise to autonomy theory, which can be understood as both a continuation and an extension of the original autopoietic insight.

Autonomy theory retained the central commitment to organisation while expanding the explanatory scope of organisational biology. Rather than focusing exclusively on self-production, autonomy theorists investigated how living systems sustain themselves through networks of mutually dependent processes that collectively maintain the conditions required for their own continuation. The emphasis shifted from the production of components to the maintenance of organised systems.

This development proved important because living systems do more than produce themselves. They continuously preserve organisational relationships whose persistence depends upon ongoing activity. Biological organisation therefore came to be understood not simply as self-production but as a form of organised self-maintenance in which the activities of the system contribute to the continued existence of the organisational conditions that make those activities possible.

The emergence of autonomy theory should therefore be understood as a natural development within organisational biology. Autopoiesis identified the importance of organisation. Autonomy theory sought to explain more precisely how that organisation maintains itself through time and why such maintenance possesses biological significance.

From Closure to Regulation

One of the most influential developments within autonomy theory was the concept of constraint closure. Living systems consist of networks of constraints that mutually contribute to one another’s maintenance while collectively sustaining the organised processes upon which the system depends. Through this organisation, biological activity continuously regenerates the conditions required for its own continuation.

Constraint closure provided a more explicit account of organisational maintenance than was available within early autopoietic formulations. It explained how living systems preserve organisational integrity despite continual material turnover and environmental fluctuation. Organisms remain viable not because particular components persist unchanged but because organisational relations are continually regenerated through ongoing activity.

Yet even closure does not exhaust biological explanation. Living systems do not merely maintain organisational integrity. They also regulate ongoing activity under changing circumstances. Organisms coordinate physiological processes, respond to perturbations, modify developmental trajectories, and adjust behaviour in ways that contribute to persistence. Such activities involve forms of control and coordination that cannot be fully reduced to organisational closure alone.

The concept of regulation emerged in response to this explanatory requirement. Regulation concerns the organised processes through which living systems monitor, coordinate, and modify ongoing activity in relation to changing conditions. Whereas closure explains how organisational maintenance is possible, regulation explains how organised systems preserve viability under circumstances that continually threaten organisational stability.

This distinction proved significant because it revealed that living systems are not merely self-producing or self-maintaining entities. They are also systems capable of actively reorganising activity in response to internal and external conditions. Theoretical biology therefore required concepts capable of addressing not only organisation but also the dynamic management of organised activity.

From Regulation to Agency

The recognition of regulation naturally led to a further question. If living systems regulate themselves in relation to changing conditions, how should their active engagement with the environment be understood? Regulation explains the coordination of internal activity, but organisms do not exist in isolation from their surroundings. They continually interact with environmental conditions that affect their prospects for continued existence.

This challenge led organisational approaches increasingly toward questions of agency. Organisms move, forage, communicate, construct niches, modify environments, avoid threats, exploit opportunities, and engage in a wide range of activities that influence the conditions under which persistence becomes possible. Such activities cannot be adequately described as passive responses to external stimuli. They represent organised forms of engagement directed toward maintaining viability.

Agency therefore introduces a further dimension of biological explanation. Closure explains organisational maintenance. Regulation explains internal coordination and control. Agency explains how organised systems actively participate in shaping the conditions affecting their continued existence. These dimensions are deeply interconnected, but they perform distinct explanatory functions.

The emergence of agency within organisational biology reflects a broader recognition that living systems are not merely organised structures. They are organised activities. Their persistence depends not only upon the maintenance of internal organisation but also upon their capacity to engage productively with changing environments. Understanding life therefore requires understanding not only how systems are organised but also how they act.

APS incorporates this development explicitly. Biological agency is understood as the viability-oriented activity through which living systems contribute to the maintenance of conditions favourable to continued existence. Agency is not an additional property imposed upon organised systems. Rather, it emerges from the organisation of living systems themselves and represents one of the principal ways through which viability is actively realised.

Why Viability Matters

The movement from autopoiesis to autonomy and from autonomy to agency reveals a common theme. Organisational biology increasingly converges upon questions concerning viability. Self-production, closure, regulation, and agency all ultimately derive their significance from their relationship to the continued existence of living systems.

APS therefore places viability at the centre of biological explanation. Viability concerns the organised conditions under which persistence remains possible. Living systems continuously encounter circumstances that either support or threaten those conditions, and their activities acquire biological significance through their consequences for viability. Processes matter because they contribute to or undermine the continued maintenance of organised persistence.

This perspective helps clarify why biological normativity arises. Organisms do not merely possess organisational structures. They continuously distinguish between favourable and unfavourable conditions through the organisation of their activity. Success and failure, benefit and harm, function and malfunction emerge from the relationship between organised activity and viability rather than from externally imposed purposes or observer-relative judgments.

Viability also helps explain why APS does not identify life with self-production alone. Self-production is undoubtedly important, but it is only one component within a broader architecture that includes closure, regulation, agency, development, ecological interaction, and historical continuity. Living systems are not merely self-producing organisations. They are viability-oriented forms of organised persistence whose activities continually contribute to the maintenance of the conditions required for their own continuation.

From this perspective, APS does not reject autopoiesis. Rather, it situates self-production within a richer explanatory framework in which viability provides the organising principle connecting organisation, regulation, agency, and persistence.

Historical Continuity and Evolution

Although autonomy theory expanded organisational biology beyond self-production, its primary focus remained the maintenance of individual living systems. APS accepts this focus but argues that biological explanation must also account for the historical continuity through which living organisation persists, diversifies, and transforms across generations. Living systems are not merely organised entities existing in the present. They are participants in lineages whose organisational characteristics have been maintained, modified, and transmitted through evolutionary time.

This historical dimension introduces explanatory questions that cannot be fully addressed through self-production, closure, regulation, or agency alone. Organisms persist only temporarily, whereas living organisation exhibits continuity across generations, populations, and evolutionary lineages. Biological explanation must therefore account not only for how individual systems maintain themselves but also for how forms of organisation remain historically continuous while undergoing continual transformation.

Variation plays a central role within this process. Evolutionary novelty does not arise independently of living organisation and subsequently become incorporated into biological systems. Rather, variation emerges from the activities of already organised systems. Developmental processes, behavioural activity, ecological interactions, physiological regulation, and reproductive processes continuously generate new possibilities for biological organisation. Novelty therefore arises within historically continuous forms of organised persistence rather than existing as external raw material upon which evolutionary processes subsequently operate.

Inheritance provides the complementary process through which continuity is maintained. Organisms do not transmit static structures across generations. Instead, they contribute to the reconstruction of organisational conditions that make continued viability possible. Biological continuity therefore depends upon the repeated re-establishment of viable forms of organisation rather than the simple replication of fixed entities. Evolutionary persistence is simultaneously conservative and transformative, preserving continuity while enabling change.

Natural selection occupies an important place within this framework, but APS interprets its role differently from accounts that treat selection as the primary source of biological organisation. Selection does not create organised persistence. Rather, it differentially stabilises historically existing forms of viability-oriented organisation. Living systems must already exist as organised, viable entities before selection can operate upon them. Evolutionary explanation therefore requires understanding both the organisational conditions that make living systems possible and the historical processes through which forms of organisation become transformed across time.

From this perspective, evolution becomes the historical transformation of organised persistence. Organisms, populations, and lineages remain continuous not because they avoid change but because they maintain continuity through change. Historical persistence and transformation are therefore complementary rather than opposing aspects of biological organisation. APS extends organisational biology by integrating this evolutionary dimension directly into its account of life.

The APS Perspective

APS should not be understood as a rejection of autopoiesis. On the contrary, many of its central concepts would be difficult to formulate without the organisational revolution initiated by autopoietic theory. The recognition that living systems are defined by organisation rather than by constituent materials remains one of the foundational insights upon which APS is built.

At the same time, APS argues that self-production alone does not fully explain living organisation. Theoretical developments following autopoiesis increasingly revealed the importance of self-maintenance, constraint closure, regulation, agency, and normativity. APS incorporates these developments while extending them further through a unified account of viability-oriented organised persistence.

Within APS, living systems are understood as organised entities whose continued existence depends upon the active maintenance of viability across changing circumstances. Constraint closure explains how organisational conditions are maintained. Regulation explains how ongoing activity is coordinated. Agency explains how organisms engage with environmental conditions affecting persistence. Viability provides the normative horizon within which these activities acquire biological significance. Historical continuity explains how forms of organisation remain continuous through evolutionary transformation.

The result is an explanatory framework that preserves the strengths of autopoiesis while integrating them into a broader architecture. Self-production remains important, but it becomes one component within a larger account of living organisation that includes agency, persistence, development, ecology, cognition, and evolution. APS therefore seeks not to replace autopoiesis but to situate it within a more comprehensive understanding of life.

The relationship between autopoiesis, autonomy theory, and APS is consequently best understood as a developmental progression rather than a sequence of competing theories. Autopoiesis established the importance of organisation. Autonomy theory clarified self-maintenance, closure, and regulation. APS integrates these achievements while extending them through concepts of viability, agency, historical continuity, and evolutionary transformation. Each stage preserves insights from earlier work while expanding the scope of biological explanation.

Summary

Autopoiesis transformed theoretical biology by demonstrating that living systems are defined by organisation rather than by their constituent components. Through the concept of self-production, it showed how living systems continuously generate and maintain the conditions required for their own existence and thereby established organisation as a central explanatory category within biology.

Subsequent developments revealed that self-production alone does not exhaust biological explanation. Questions concerning self-maintenance, constraint closure, regulation, agency, normativity, and persistence required further theoretical development. Autonomy theory emerged from this effort and extended the organisational tradition through increasingly sophisticated accounts of biological organisation.

APS builds directly upon these foundations while integrating them into a broader explanatory framework centred on viability-oriented organised persistence. Within this framework, living systems are understood as organised entities whose continued existence depends upon the integration of closure, regulation, agency, viability, historical continuity, and evolutionary transformation. Biological organisation therefore extends beyond self-production to encompass the full range of processes through which living systems maintain themselves, act within their environments, and remain historically continuous through time.

Key Point

Autopoiesis established that living systems are organisationally constituted and self-producing. APS accepts this insight but argues that life is more fully understood as viability-oriented organised persistence integrating self-production, regulation, agency, historical continuity, and evolutionary transformation.