Open peer commentary on the article “Précis of The Philosophy of Affordances” by Manuel Heras-Escribano. Abstract: I question the notion that we need to understand affordances in terms of Rylean non-factualist dispositions. This is not because I disagree with Herlas-Escribano’s analysis; on the contrary, I consider it illuminating and essential. Rather, his analysis shows that affordances can be understood as originally defined by Gibson and elaborated by Stoffregen (i.e., as a particular kind of non-reductionist, non-physicalist relation between organism and environment. Translation into Rylean dispositions is therefore unnecessary.

Embodied cognition (EC) views propose that cognition is shaped by the kind of body that organisms possess. We give an overview of recent literature on EC, highlighting the differences between stronger and weaker versions of the theory. We also illustrate the debates on the notions of simulation, of representation, and on the role of the motor system for cognition, and we address some of the most important research topics. Future challenges concern the understanding of how abstract concepts and words are represented, and the relationship between EC and other promising approaches, the distributional views of meaning and the extended mind views.

Key words: affordances, cognitivism, distributional views, embodied cognition, emotion, enactivism, extended mind, grounded cognition, language comprehension, mental representation, mirror neurons, radical embodied cognition, representation, simulation, situated cog

Open peer commentary on the article “Designing Constructionist E-Books: New Mediations for Creative Mathematical Thinking?” by Chronis Kynigos. Upshot: Chronis Kynigos’s article invites us to explore how to make familiar objects for learning — namely, books — more constructionist. In my response, I ask questions about the affordances and potential limitations of books as central objects, particularly about the role of the learner in relation to the objects.

In this paper, we argue for a theoretical separation of the free-energy principle from Helmholtzian accounts of the predictive brain. The free-energy principle is a theoretical framework capturing the imperative for biological self-organization in information-theoretic terms. The free-energy principle has typically been connected with a Bayesian theory of predictive coding, and the latter is often taken to support a Helmholtzian theory of perception as unconscious inference. If our interpretation is right, however, a Helmholtzian view of perception is incompatible with Bayesian predictive coding under the free-energy principle. We argue that the free energy principle and the ecological and enactive approach to mind and life make for a much happier marriage of ideas. We make our argument based on three points. First we argue that the free energy principle applies to the whole animal–environment system, and not only to the brain. Second, we show that active inference, as understood by the free-energy principle, is incompatible with unconscious inference understood as analagous to scientific hypothesis-testing, the main tenet of a Helmholtzian view of perception. Third, we argue that the notion of inference at work in Bayesian predictive coding under the free-energy principle is too weak to support a Helmholtzian theory of perception. Taken together these points imply that the free energy principle is best understood in ecological and enactive terms set out in this paper.

Key words: Free-energy principle, predictive-coding, skilled intentionality, affordances, enaction, active inference, action-readiness, metastability.

Radical Enactivism holds that the best explanation of basic forms of cognition is provided without involving information of any sort. According to this view, the ability to perceive visual affordances should be accounted for in terms of extensional covariations between variables spanning the agent’s body and the environment. Contrary to Radical Enactivism, I argue that the intensional properties of cognition cannot be ignored, and that the way in which an agent represents the world has consequences on the explanation of basic sensorimotor abilities. To support this claim, I show that the perception of visual affordances is not segregated from higher forms of cognition; rather, it is modulated by the agent’s ability to recognize the semantic identity of the visual target. Accordingly, since the semantic recognition of an object involves a way of representing it under a certain description, it can be inferred that the perception of visual affordances cannot be accounted for without considering the intensional properties of cognition. This poses an explanatory issue for Radical Enactivism.

Embodied Cognition represents the most important news in cognitive psychology in the last twenty years. The basis of its research program is the idea that cognitive processes depend, mirror, and are influenced by bodily control systems. A whole class of novel perspectives entered into the psychologists’ agenda only after the emergence and success of EC. In the paper we will deal with some of the main topics debated within EC, from the discussion on the role of representation, to the relationship with enactivism, with functionalism and with the extended mind view. Against an interpretation according to which EC is simply an evolution of the classical cognitivist program, we will focus on the aspects that highlight crucial discontinuities with it, suggesting instead that the EC perspective is indebted to previous theoretical traditions such as American pragmatism, ecological psychology and phenomenology. In the present paper we will discuss some of the most important achievements of EC in different areas of experimental research, from the study of affordances to that of the bodily experience, from the investigation on emotions to that on language. Our aim is to force the Italian public, particularly recalcitrant to EC, to critically reflect on the debts to previous traditions. Relevance: The paper reviews embodied theories with a special focus on enactivist approaches.

A widely cited roadblock to bridging ecological psychology and enactivism is that the former identifies with realism and the latter identifies with constructivism, which critics charge is subjectivist. A pragmatic reading, however, suggests non-mental forms of constructivism that simultaneously fit core tenets of enactivism and ecological realism. After advancing a pragmatic version of enactive constructivism that does not obviate realism, I reinforce the position with an empirical illustration: Physarum polycephalum, a communal unicellular organism that leaves slime trails that form chemical barriers that it avoids in foraging explorations. Here, environmental building and sensorimotor engagement are part of the same process with P. polycephalum coordinating around self-created, affordance-bearing geographies, which nonetheless exist independently in ways described by ecological realists. For ecological psychologists, affordances are values, meaning values are external to the perceiver. I argue that agent-enacted values have the same status and thus do not obviate ecological realism or generate subjectivism. The constructivist-realist debate organizes around the emphasis that enactivists and ecological theorists respectively place on the inner constitution of organisms vs. the structure of environments. Building on alimentary themes introduced in the P. polycephalum example and also in Gibson’s work, I go on to consider how environment, brain, visceral systems, and even bacteria within them enter perceptual loops. This highlights almost unfathomable degrees of mutually modulating internal and external synchronization. It also shows instances in which internal conditions alter worldly configurations and invert values, in Gibson’s sense of the term, albeit without implying subjectivism. My aim is to cut across the somatic focus of enactive constructivism and the external environment-oriented emphasis of ecological realism and show that enactivism can enrich ecological accounts of value.

Key words: affect and value, central and peripheral nervous system, ecological psychology, enactivism, gut microbiome, pragmatism and phenomenology, physarum polycephalum, realism vs. constructivism.

Open peer commentary on the article “Précis of The Philosophy of Affordances” by Manuel Heras-Escribano. Abstract: I argue that any approach to affordances that stays close to the letter of the law (of traditional Gibsonian ecological psychology) is not able to account for human agency and meaningful experience. I sketch how an approach that follows the spirit of the law can account for these phenomena.

This paper reports on the Kuhnian revolution now occurring in neuropsychology that is finally supportive of and friendly to phenomenology – the “enactive” approach to the mind-body relation, grounded in the notion of self-organization, which is consistent with Husserl and Merleau-Ponty on virtually every point. According to the enactive approach, human minds understand the world by virtue of the ways our bodies can act relative to it, or the ways we can imagine acting. This requires that action be distinguished from passivity, that the mental be approached from a first person perspective, and that the cognitive capacities of the brain be grounded in the emotional and motivational processes that guide action and anticipate action affordances. It avoids the old intractable problems inherent in the computationalist approaches of twentieth century atomism and radical empiricism, and again allows phenomenology to bridge to neuropsychology in the way Merleau-Ponty was already doing over half a century ago.

Key words: occipital lobe, causal power, john benjamin, phenomenal consciousness, efferent activity.

The purpose of this essay is to compare and contrast existing theoretical approaches to understanding the visual guidance of action and to introduce a new approach. The focus is on tasks, such as steering, braking, and intercepting, that are (more or less) continuously guided on the basis of visual information. The prominent approach, information-based control, captures important aspects of behavior but is incompatible with the theory of affordances, a core principle of the ecological approach. Information-based control also fails to capture how actors behave in ways that take the limits of their action capabilities into account. I attempt to resolve these problems by introducing a new approach, affordance-based control, which asserts that a primary function of vision is to allow actors to see the world in terms of what they can and cannot do. Affordance-based control captures the tight coupling between information in optic flow and movement that is characteristic of visually guided action but also provides a parsimonious explanation of how actors take into account the dynamic properties of their body and the environment.