Biological Goals Without Mentalism — An APS Account of Goal-Directedness

Abstract

Biological systems are often described as goal-directed, from cellular repair processes to organismal behaviour. Contemporary frameworks attempt to formalise this notion as an empirically testable property of organised systems. However, such approaches risk importing mentalistic assumptions or extending goal language beyond its explanatory scope. The Agency–Process–Scale (APS) framework resolves this by reinterpreting goal-directedness in strictly biological terms. In APS, goal-directedness is not the pursuit of internally represented ends but the viability-oriented biological organisation of activity within constraint-closed systems. More precisely, it describes the regulation of activity through which biological purpose—orientation toward continued viability—is enacted and realised in function. This article clarifies how biological “goals” can be understood without mentalism, grounding teleological language in the dynamics of persistence.

The Problem of Biological Goals

Biological systems are described as goal-directed: cells repair damage, organisms acquire resources, and development produces organised form. These descriptions capture real regularities but introduce a conceptual problem: the language of “goals” implies intention, representation, or foresight.

Attempts to formalise goal-directedness treat it as an empirically testable property of organised systems. However, these approaches often retain assumptions about internal targets, optimisation, or information processing that blur the distinction between biological organisation and cognitive representation.

APS resolves this by reframing the concept at the level of biological organisation.

Conventional Framing

Goal-directedness is conventionally understood as:

behaviour oriented toward achieving a specific outcome
system dynamics minimising deviation from a target state
biological organisation described as directed toward a result

This framing generates two persistent problems:

Mentalistic drift — goals are treated as internal representations
Conceptual expansion — goal-directedness is attributed without clear criteria

The result is either metaphorical usage or loss of explanatory constraint.

The APS Reframing

APS reinterprets goal-directedness without invoking representation or intention.

Living systems are viability-oriented, constraint-closed organisations whose activity is continuously modulated relative to conditions of persistence. Deviations from viability-relevant states are normatively significant within the system’s own biological organisation.

From this perspective:

Goal-directedness describes the organised regulation of activity through which a system’s biological purpose—its orientation toward continued viability—is enacted.

This purpose is realised through function: the mechanistic operations by which viability-oriented biological organisation is maintained.

No internal goal is required. What is described as goal pursuit is the maintenance of viability through constraint-regulated biological organisation.

From Goals to Viability Conditions

APS replaces goal language with an organisational account:

Conventional Term	APS Interpretation
Goal	Viability condition
Goal pursuit	Constraint-regulated activity
Error	Deviation from viability
Success	Sustained persistence

This reframing preserves explanatory precision while removing ambiguity. Biological systems do not target abstract endpoints; they remain within viability-supporting regimes through continuous regulation.

In APS terms, what is described as a “goal” corresponds to the conditions that biological purpose maintains and that function operationalises.

Normativity Without Mentalism

In biological systems, some states sustain persistence while others undermine it. This asymmetry arises from the system’s biological organisation and does not depend on subjective evaluation.

To say that something matters to a system is to say that it makes a difference to viability.

Goal-directedness is therefore not psychological but organisationally normative. Systems behave as goal-directed because their activity is structured around maintaining viability.

Diagnostic Criteria

APS provides operational criteria for identifying goal-directed biological organisation.

A system exhibits goal-directedness when it demonstrates:

Viability Gradient (VG) — sensitivity to conditions affecting persistence
Normativity Gradient (NG) — differential evaluation relative to viability
Cognitive Integration (CI) — coordinated regulation across processes

These criteria distinguish systems with endogenous biological organisation from those whose behaviour is externally imposed. Goal-directedness is therefore conditional on constraint-closed, viability-oriented biological organisation.

Avoiding Conceptual Expansion

Goal-directedness is often extended to artificial or engineered systems without sufficient constraint.

APS establishes a principled boundary:

systems dependent on externally imposed biological organisation lack intrinsic normativity
systems lacking constraint closure do not regulate their own viability conditions

Such systems may exhibit goal-like behaviour but do not instantiate biological goal-directedness.

Teleology Reinterpreted

APS naturalises teleological language.

Goal-directedness is not orientation toward future endpoints but the present-tense biological organisation of activity through which biological purpose is enacted and realised in function. Teleology is thus grounded in biological process rather than intention.

APS Box — What APS Means by Purpose

In biology, purpose is often interpreted as intention, design, or the pursuit of a future goal. In APS, it is neither intention nor goal-seeking. It is the system-level organisation of activity through which a living system sustains the conditions required for its continued viability.

Living systems do not act toward externally defined endpoints or internal representations of goals. Their activity is structured by an intrinsic asymmetry between conditions that support persistence and those that undermine it. This asymmetry organises behaviour in a way that appears goal-directed, but is in fact the ongoing enactment of viability-oriented organisation.

Purpose is therefore not a property added to biological systems but an expression of how they are organised. Function realises this organisation at the level of components, while purpose characterises the organisation of the system as a whole. What is often described as goal-directedness is the manifestation of purpose in action, not the pursuit of an independent target.

Key Point. In APS, purpose is not intention or goal-seeking—it is the viability-oriented organisation of activity through which living systems sustain their own persistence.

APS Box — From Viability to Meaning

In biology, meaning is often treated as something added to life through cognition, language, or representation. In APS, meaning is not a separate domain but arises directly from viability-oriented organisation.

Living systems regulate their activity in relation to conditions that affect their persistence. Because these conditions make a difference to viability, they are not merely physical states but become biologically significant. Differences that matter for persistence are registered and acted upon within the system’s organisation.

This establishes a continuity from viability to meaning. Normativity—distinguishing what supports or undermines persistence—is the basis from which meaning emerges. As organisation becomes more complex, systems can differentiate, anticipate, and modulate their activity in increasingly structured ways, but the underlying logic remains the same.

Key Point. Meaning in APS is not added to life—it emerges from viability-oriented organisation as the structured significance of what matters for persistence.

Key Point

Goal-directedness in biology is the regulation of viability conditions through which biological purpose is enacted and realised in function, not the pursuit of represented ends.