McShea field theory vs Covolution

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Comparison item McShea’s field theory Covolution theory Core difference
Basic structure A focal entity exists within a higher-level field, while lower-level mechanisms operate inside the entity. This gives a field–entity–mechanism triadic structure. A horon operates within a symvironment, but the symvironment is not a detached background. It is an interactional structure co-formed with the horon. McShea uses a field–within–mechanism hierarchy; covolution uses a recursive horon–symvironment co-construction structure.
Source of direction Direction comes from the higher-level field. The field guides the entity’s trajectory persistently and plastically. Direction emerges from the coupling of internal state, entelopy, prediction, feedback, and symvironmental reconstruction. This is expressed as entelenomy. McShea proposes field-originated direction; covolution proposes co-generated direction.
Mode of existence of field / symvironment The field is external and higher-level relative to the guided entity. A field may exist inside an organism, but it is still external to the entity it guides. The symvironment is not merely external environment. It is a relational and operational environment co-produced by the horon. The horon changes the symvironment, and the changed symvironment reconfigures the horon. Field is mainly a directing background; symvironment is a co-built interaction field.
Role of the entity / horon The entity moves or changes within the field and uses directional information supplied by the field to correct its trajectory. The horon reads, computes, responds to, modifies, and partially regenerates its symvironment. It is not only field-guided but also field-modifying. McShea’s entity is primarily field-guided; the covolutionary horon is field-reading and field-writing.
Criterion of goal-directedness The marks of goal-directedness are persistence and plasticity: return to a trajectory after perturbation, and convergence on a trajectory from multiple starting points. Life-directedness is defined through entelenomy, entelopy, feedback, symvironmental prediction, and state-space reconstruction. Persistence and plasticity can be absorbed as partial indicators. McShea uses a trajectory-based criterion; covolution uses a computational-relational generation criterion.
Attitude toward teleology Classical teleology, entelechy, spirit, and consciousness are rejected. However, evolution can still be goal-directed in a field-theoretic sense. External teleology is rejected. Direction is not imposed from outside but generated internally through the horon’s interaction with its symvironment. Both reject mystical teleology, but covolution explains direction more strongly as internal–external co-computation.
Position of mechanism Mechanisms are lower-level structures inside the entity that implement or enable field guidance. The source of directional information is the field. Mechanisms consist of switching networks, horonic boundaries, information storage, feedback, repair, and predictive computation. Direction arises through mechanism–symvironment circulation. McShea treats mechanism as the executor of field guidance; covolution treats mechanism as the active computational machinery of symvironmental reconstruction.
Interpretation of natural selection Natural selection is a field-directed process in which an ecological field guides a lineage toward an adaptive trajectory. Natural selection is one component of covolution. It is a feedback process within a broader horon–symvironment reconstruction system. McShea reinterprets natural selection as ecological field guidance; covolution repositions it as a subprocess of horon–symvironment feedback.
Explanation of evolutionary trends An evolutionary trend is goal-directed when a field guides a lineage persistently and plastically toward a particular direction. Evolution is the process by which horons modify one another’s boundaries, information structures, state spaces, and symvironments, generating new covolutionary states. McShea explains trend direction; covolution explains state-space reconstruction.
Continuity between life and nonlife Even simple physical systems, such as a ball in a bowl, may count as weakly goal-directed. Goal-directedness is a matter of degree. Nonliving switches and interactions may be continuous with living systems, but a living horon must additionally maintain boundary, internal state-space, computation, prediction, repair, and symvironmental coupling. McShea broadly extends goal-directedness; covolution more strictly distinguishes living covolutionary organization.
Concept of environment The environment is interpreted as a field that contains and guides the entity. Ecology can function as a selection field. Environment is symvironment: a co-constituted environment generated through interaction with the horon. Neither horon nor symvironment is operationally complete in isolation. McShea’s environment is a guiding field; covolution’s environment is a co-constituted symvironment.
Direction of causality The central causality is upper direction: the higher-level field guides the lower-level entity. Lateral causes may produce deviations. Causality is upward, downward, lateral, and circular. The horon is constrained by the symvironment while also reconstructing it. McShea centers on upper-level guiding causality; covolution centers on recursive mutual causality.
Role of information The field provides directional information to the entity. However, the internal information-processing structure is less formally developed. Information is the basic unit of life and universe. Switches, horons, entelopy, entelenomy, and feedback are all defined as information-processing structures. McShea treats the field as an information source; covolution treats life as active information computation.
Prediction and futurity The entity appears to move toward a goal, but the goal is not a future cause. It is the present field structure that supplies direction. The horon predicts future-relevant symvironmental states and uses those predictions to reconstruct its present state-space. McShea resolves futurity through present field direction; covolution explains futurity through predictive computation and state-space reconstruction.
Meaning of failure Goal-directedness includes the possibility of failure. A field may guide an entity without guaranteeing successful arrival at the target. Failure means breakdown of boundary maintenance, prediction, feedback, entelopy preservation, or horon–symvironment coupling. Aging, disease, cancer, and ecological collapse can be interpreted as failures of covolution or as discovolutionary states. McShea treats failure as trajectory failure; covolution treats failure as coupling failure.
Measurability Persistence, plasticity, field strength, responsiveness, and trajectory recovery can be measured. Covolution should measure persistence and plasticity, but also switching density, entelopy, predictive accuracy, symvironmental reconstruction rate, and gerostatic maintenance. McShea’s metrics are trajectory-centered; covolution’s metrics are information–computation–feedback-centered.
Greatest strength It naturalizes teleology without mysticism and allows natural selection itself to be reinterpreted as a field-directed process. It explains life not as a passive object of selection but as an active horon that computes, modifies, and reconstructs its symvironment. McShea is strongest in the naturalization of goal-directedness; covolution is strongest in the theorization of biological agency and active life-processes.
Greatest weakness The field concept may become too broad, and the entity’s active modification of the field is underdeveloped. Mathematical formalization and operational metrics are still underdeveloped. The concept of symvironment also risks becoming too broad unless tightly defined. McShea risks externalism and overextension; covolution risks conceptual density and insufficient formalization.
One-sentence summary Field directs entity. Horon and symvironment recursively construct each other. McShea says the field guides. Covolution says the horon and symvironment co-create the direction.

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