Conscious Agency is a major driver of evolution. Artificial Selection (i.e. Conscious Selection by human breeders) was the foil against which Charles Darwin defined Natural Selection. In later work, he extended Artificial Selection to other species. That ability for social (e.g. sexual) selection must have evolved. Jablonka and Ginsburg identify markers of conscious agency, such as Unlimited Associative Learning (UAL), and show that it must have existed at the time of the Cambrian Explosion. To their insights, my commentary argues that (...) the harnessing of stochasticity was also involved in the evolution of the faculty of choice in organisms. (shrink)

The scientific study of consciousness or subjective experiencing is a rapidly expanding research program engaging philosophers of mind, psychologists, cognitive scientists, neurobiologists, evolutionary biologists and biosemioticians. Here we outline an evolutionary approach that we have developed over the last two decades, focusing on the evolutionary transition from non-conscious to minimally conscious, subjectively experiencing organisms. We propose that the evolution of subjective experiencing was driven by the evolution of learning and we identify an open-ended, representational, generative and recursive form of associative (...) learning, which we call Unlimited Associative Learning (UAL), as an evolutionary transition marker of minimal consciousness. This evolutionary marker provides evidence that the evolutionary transition to consciousness has gone to completion and allows reverse-engineering from this learning capacity to the system that enables it – making possible the construction of a toy model of UAL. The model allows us to identify some of the key processes and structures that constitute minimal consciousness, points its taxonomic distribution and the ecological context in which it first emerged, highlights its function and suggests a framework for exploring developmental and evolutionary modifications of consciousness. We point to ways of experimentally testing the relationship between UAL and consciousness in human and in non-human animals and discuss the theoretical and ethical implications of our approach. The framework we offer allows the exploration of the evolutionary changes in agency, value systems, selective processes and goals that were involved in the transition to subjective experiencing from a perspective that resonates with the approaches of bio-semioticians. (shrink)

This paper concerns biopsychism, the position that feeling is a vital activity of all organisms or living beings. It evaluates biopsychism specifically from the perspective of the enactive conception of life and life-mind continuity. Does the enactive conception of life as fundamentally a value-constituting and value-driven process imply a conception of life as sentient of value? Although a plausible case can be made, there remains a conceptual and inferential gap between differential responsiveness to value and hedonic value or affective valence. (...) Nevertheless, the case for zoopsychism—that animals are the only sentient living beings—over biopsychism is also inconclusive. (shrink)

This is a response to the nine commentaries on our target article “Unlimited Associative Learning: A primer and some predictions”. Our responses are organized by theme rather than by author. We present a minimal functional architecture for Unlimited Associative Learning that aims to tie to together the list of capacities presented in the target article. We explain why we discount higher-order thought theories of consciousness. We respond to the criticism that we have overplayed the importance of learning and underplayed the (...) importance of spatial modelling. We decline the invitation to add a negative marker to our proposed positive marker so as to rule out consciousness in plants, but we nonetheless maintain that there is no positive evidence of consciousness in plants. We close by discussing how UAL relates to development and to its material substrate. (shrink)

The attribution of sentience or consciousness to plants is currently a topic of debate among biologists and philosophers. The claim that plants are conscious is based on three arguments: (i) plants, like all living organisms, are sentient (biopsychism); (ii) there is a strong analogy between the phloem transport system of plants and the nervous system of animals; and (iii) plants are the cognitive equals of sentient animals. On the basis of a model of consciousness that spells out criteria for assigning (...) sentience to a living organism and presents a diagnostic evolutionary marker of consciousness, we argue that these arguments are flawed and discuss some of the ethical issues they raise. (shrink)

Over the past two decades, Ginsburg and Jablonka have developed a novel approach to studying the evolutionary origins of consciousness: the Unlimited Associative Learning framework. The central idea is that there is a distinctive type of learning that can serve as a transition marker for the evolutionary transition from non-conscious to conscious life. The goal of this paper is to stimulate discussion of the framework by providing a primer on its key claims and a clear statement of its main empirical (...) predictions. (shrink)

How does consciousness vary across the animal kingdom? Are some animals ‘more conscious’ than others? This article presents a multidimensional framework for understanding interspecies variation in states of consciousness. The framework distinguishes five key dimensions of variation: perceptual richness, evaluative richness, integration at a time, integration across time, and self-consciousness. For each dimension, existing experiments that bear on it are reviewed and future experiments are suggested. By assessing a given species against each dimension, we can construct a consciousness profile for (...) that species. On this framework, there is no single scale along which species can be ranked as more or less conscious. Rather, each species has its own distinctive consciousness profile. (shrink)

Around 540 million years ago there was a sudden, dramatic adaptive radiation known as the Cambrian Explosion. This event marked the origin of almost all of the phyla (major lineages characterized by fundamental body plans) of animals that would ever live on earth, as well the appearance of many notable features such as rigid skeletons and other hard parts, complex jointed appendages, eyes, and brains. This radical evolutionary event has been a major puzzle for evolutionary biologists since Darwin, and while (...) our understanding of it has recently improved with new fossil finds, richer molecular phylogenies, and better grasp of ecological, evolutionary, and developmental processes generally, unanswered questions remain. In this paper I argue that a basic cognitive toolkit for embodied, object-oriented, spatial cognition (what I call Basic Cognitive Embodiment) is a practical necessity for control of a large, mobile, complexly articulated body in space. This hypothesis allows us to relate the complexification of animal bodies to the complexification of perception, cognition and behavior in a way that can help to fill in gaps in our emerging picture of the Cambrian Explosion, as well as shed light on the deep evolutionary origins of the mind. (shrink)

A broad range of evidence regarding the functional organization of the vertebrate brain – spanning from comparative neurology to experimental psychology and neurophysiology to clinical data – is reviewed for its bearing on conceptions of the neural organization of consciousness. A novel principle relating target selection, action selection, and motivation to one another, as a means to optimize integration for action in real time, is introduced. With its help, the principal macrosystems of the vertebrate brain can be seen to form (...) a centralized functional design in which an upper brain stem system organized for conscious function performs a penultimate step in action control. This upper brain stem system retained a key role throughout the evolutionary process by which an expanding forebrain – culminating in the cerebral cortex of mammals – came to serve as a medium for the elaboration of conscious contents. This highly conserved upper brainstem system, which extends from the roof of the midbrain to the basal diencephalon, integrates the massively parallel and distributed information capacity of the cerebral hemispheres into the limited-capacity, sequential mode of operation required for coherent behavior. It maintains special connective relations with cortical territories implicated in attentional and conscious functions, but is not rendered nonfunctional in the absence of cortical input. This helps explain the purposive, goal-directed behavior exhibited by mammals after experimental decortication, as well as the evidence that children born without a cortex are conscious. Taken together these circumstances suggest that brainstem mechanisms are integral to the constitution of the conscious state, and that an adequate account of neural mechanisms of conscious function cannot be confined to the thalamocortical complex alone. (Published Online May 1 2007) Key Words: action selection; anencephaly; central decision making; consciousness; control architectures; hydranencephaly; macrosystems; motivation; target selection; zona incerta. (shrink)

Jablonka and Ginsburg’s target paper (2022) argues that (a) consciousness is closely tied to goal-directed behavior and an open-ended capacity for learning and adaptation driven by exploration-and-stabilization dynamics; and (b) consciousness has this essential dynamical nature due to its emergence in evolution from the spontaneous exploration-and-stabilization dynamics of animal life, which the authors term vivaciousness. In this commentary, I explore these two claims with relation to two features of experience that are of clear importance to goal-directed behavior both phenomenologically and (...) biologically: (1) the role of probabilistic expectation, and (2) the role of available energy. Applying Jablonka and Ginsburg’s framework, I argue that these two features are substantive and potentially universal examples of consciousness being shaped by biology. (shrink)

This commentary addresses the concept of learning stemming from Eva Jablonka and Simona Ginsburg’s theory of the emergence of consciousness. Jablonka and Ginsburg find strong support in biosemiotics for their argument that learning offers an evolutionary transition marker for the emergence of consciousness. Indeed, biosemiotics embraces a view on evolution that integrates both phylogeny and ontogeny. It does not polarize learning and evolving. At the same time, Jablonka and Ginsburg’s argument gives both biosemiotics and learning theory a shake, forcing scholarship (...) in these fields to tackle difficult questions on agency, selfhood, consciousness and anthropological difference. I explore some of the main questions that arise from this theoretical development, particularly in reference to Andrew Stables’ semiotic learning theory, which has been easily nested in a biosemiotic framework. (shrink)

Although Jakob von Uexküll´s Umwelt theory is not mentioned in Jablonka and Ginsburg´s Target article, von Uexküll´s theory is clearly relevant in the context of the article, with the authors´ emphasis on the origin of “subjective experiencing”. I relate some of Jablonka and Ginsburg´s main claims to an evolutionary perspective on Umwelt theory. As it turns out, the Umwelt has multiple evolutionary origins depending on our exact definition(s) of Umwelt.

Our comment is based on a simple but, we believe, compelling principle. The proposed cognitive processes and functions that are components of Jablonka and Ginsburg’s Unlimited Associative Learning (UAL) are real and are fundamental elements in the varieties of consciousness, cognition, problem solving, and sentience in the species they identify. But, from our perspective, they didn’t function as the metaphoric biomolecular ship that brought consciousness into being. The UAL functions are, and should be viewed as, evolutionary steps that built upon (...) a deeper and much older cognitive foundation. The appearance of UAL didn’t allow consciousness to emerge. It allowed it to change the manner in which sentience was instantiated − just as a host of other evolutionary developments did. In short, the emergence of UAL is a _token_ on a continuum of mental experience and not a distinct _type_ of mentation. (shrink)

The Modern Synthesis has dominated biology for 80 years. It was formulated in 1942, a decade before the major achievements of molecular biology, including the Double Helix and the Central Dogma. When first formulated in the 1950s these discoveries and concepts seemed initially to completely justify the central genetic assumptions of the Modern Synthesis. The Double Helix provided the basis for highly accurate DNA replication, while the Central Dogma was viewed as supporting the Weismann Barrier, so excluding the inheritance of (...) acquired characteristics. This article examines the language of the Modern Synthesis and reveals that it is based on four important misinterpretations of what molecular biology had shown, so forming the basis of the four Illusions: 1. Natural Selection; 2. The Weismann Barrier; 3. The Rejection of Darwin’s Gemmules; 4. The Central Dogma. A multi-level organisation view of biology avoids these illusions through the principle of biological relativity. Molecular biology does not therefore confirm the assumptions of the Modern Synthesis. (shrink)

Based on the conception of life and semiosis as co-extensive an attempt is given to classify cognitive and communicative potentials of species according to the plasticity and articulatory sophistication they exhibit. A clear distinction is drawn between semiosis and perception, where perception is seen as a high-level activity, an integrated product of a multitude of semiotic interactions inside or between bodies. Previous attempts at finding progressive trends in evolution that might justify a scaling of species from primitive to advanced levels (...) have not met with much success, but when evolution is considered in the light of semiosis such a scaling immediately catches the eye. The main purpose of this paper is to suggest a scaling of this progression in semiotic freedom into a series of distinct steps. The elleven steps suggested are: 1) molecular recognition, 2) prokaryote-eukaryote transformation, 3) division of labor in multicellular organisms, 4) from irritability to phenotypic plasticity, 5) sense perception, 6) behavioral choice, 7) active information gathering, 8) collaboration, deception, 9) learning and social intelligence, 10) sentience, 11) consciousness. In light of this, the paper finally discusses the conceptual framework for biosemiotic evolution. The evolution of biosemiotic capabilities does not take the form of an ongoing composition of simple signs into composite wholes. Rather, it takes the shape of the increasing subdivision and control of a primitive, holophrastic perception-action circuit already committed to “proto-propositions” reliably guiding action already in the most primitive species. (shrink)

In this commentary, as philosophers of evolutionary biology, we will consider the evolutionary framework used in the Target Article by: (i) emphasising the fruitfulness of the interdisciplinary approach employed; (ii) highlighting some potentially controversial aspects of the proposal; and finally (iii) outlining some ideas for further integration within the UAL framework. The critical analysis will focus on the relationship between learning and consciousness, on the assumed need for a function for consciousness, and on the type of phylogenetic demarcation introduced by (...) UAL. (shrink)

Life has evolved; and so must have consciousness, or subjective experience, as found in living beings, Eva Jablonka and Simona Ginsburg contend. In their target article, which summarises the main theses of their seminal book The Evolution of the Sensitive Soul, the authors put forward an evolutionary account of consciousness that builds upon the intimate connection between consciousness and life without, however, equating the two. Instead, according to Jablonka & Ginsburg, there was life before there was consciousness, and there are (...) still living beings without consciousness. Here I offer some metaphysical considerations in favour of a more inclusive notion of consciousness than Jablonka & Ginsburg’s. These considerations turn on the role played by metabolism and agency in the processual constitution of living beings as well as on the continuum between sensation and perception. Rather than postulating a mindless inwardness in presumably non-conscious organisms, we ought to recognise the constitutive experiential nature of life, rooted in its intrinsic purposiveness. (shrink)

This commentary on the argument by Jablonka & Ginsburg ( 2022 ) that unlimited associative learning (UAL) provides an evolutionary marker for the transition to consciousness raises the question, “Transition to what?” The proposal that a level of consciousness required for UAL would embody eight specific criteria is credible, but can a limited degree of sentience still exist in animals that lack some of the criteria? The article makes a compelling case that UAL could serve as a marker for the (...) transition to an evolutionarily sustainable level of consciousness, but this may be different from _minimal_ consciousness. Nonetheless, the insight of these authors provides an exemplary roadmap for research on the evolutionary emergence of subjective experience in early animal evolution. (shrink)

We comment here on a target article by Eva Jablonka and Simona Ginsburg, which adds an interesting and important contribution to semiotic biology by their discussion of cognition and learning. In agreement with the aims and outlook of the authors, we offer a few observations about how the seminal biosemiotic concept of umwelt may be a critical tool to aid in this investigation of biological learning, knowing, being, and acting in the world. In particular, we would like to advance the (...) proposition that before the emergence of associative learning and consciousness, as those concepts are described here by the authors, there must be umwelt, understood as a sentient togetherness that appears together with the experience of a ‘specious present’. (shrink)

In this commentary I expand on the first of Noble’s illusions, the selection metaphor. Building on my work with Simona Ginsburg on the evolution of minimal consciousness, I argue that the existence of some complex sensory and motor patterns in the living world can be accounted for only through the evolution of conscious choice.

The self-domestication hypothesis suggests that, like mammalian domesticates, humans have gone through a process of selection against aggression – a process that in the case of humans was self-induced. Here, we extend previous proposals and suggest that what underlies human social evolution is selection for socially mediated emotional control and plasticity. In the first part of the paper we highlight general features of human social evolution, which, we argue, is more similar to that of other social mammals than to that (...) of mammalian domesticates and is therefore incompatible with the notion of human self-domestication. In the second part, we discuss the unique aspects of human evolution and propose that emotional control and social motivation in humans evolved during two major, partially overlapping stages. The first stage, which followed the emergence of mimetic communication, the beginnings of musical engagement, and mimesis-related cognition, required socially mediated emotional plasticity and was accompanied by new social emotions. The second stage followed the emergence of language, when individuals began to instruct the imagination of their interlocutors, and to rely even more extensively on emotional plasticity and culturally learned emotional control. This account further illustrates the significant differences between humans and domesticates, thus challenging the notion of human self-domestication. (shrink)

We suggest a teleological approach to subjective experiencing or phenomenal consciousness. Like living, subjective experiencing is a teleology-constituting mode of being, which is made up of coupled, functional processes. We explicate our notion of a 'teleological mode of being' and distinguish between three different modes: a living (non-sentient) mode of being, a sentient mode of being, and a rational-symbolic (human) mode of being, which correspond to the three levels of soul suggested by Aristotle. These evolved teleological modes of being are (...) characterized by the possession of distinct, hierarchically nested goals and value systems. We argue that the functions of parts and processes within living systems have to be situated within the appropriate teleological frame of reference. Our evolutionary and comparative approach to the mode of being of subjectively experiencing animals clarifies why functions are best attributed to the parts that constitute sentience. Our proposal resolves the problem of attributing functions to phenomenal consciousness, resonates with basic teleological intuitions and distinctions, and corresponds to the modern broad understanding of selection and evolution. (shrink)

My aim in this commentary article is to observe and comment on some of the main conceptual and methodological continuities and discontinuities between recent biosemiotics-informed learning theory and the model of Unlimited Associative Learning (UAL) that Jablonka and Ginsburg ( 2022 ) present in this Target Article. UAL as a model, presents important synthesis and clarity around the ecological context and evolutionary dynamics underlying learning, with a wide range of implications. Still, there are conceptual “grey areas” that the authors themselves (...) note and that biosemiotics in particular has problematized in various ways. I highlight the general challenge of defining minimal consciousness in relation to a concept of minimal Umwelt, as well as the issue of animal cultures, and the transition from UAL to symbolic-cognition and human language, making connections to the evolution of hominin musicking capacities. (shrink)

Building on Dor’s theory of language as a social technology for the instruction of imagination, I suggest that autobiographical memory evolved culturally as a response to the problems of false memory and deliberate deceit that were introduced by that technology. I propose that sapiens’ linguistic communication about past and future events initially occurred in small groups, and this helped to correct individual memory defects. However, when human groups grew in size and became more socially differentiated, and movement between groups prevented (...) story-verification, misattributions of events became more common. In such conditions individuals with better autobiographical memory had an advantage because they could evaluate their own contents and sources of information, as well as that of others, more accurately; this not only benefitted them directly, but also improved their reliability as social partners. Autobiographical memory thus evolved in the context of human linguistic communication through selection for communicative reliability. However, the advantages of imagination, which enables forward-planning and decision-Making, meant that memory distortions, although controlled and moderated by autobiographical memory, could not be totally eradicated. This may have driven the evolution of additional forms of memory control involving social and linguistic norms. I interpret the language and the social norms of the Pirahã as the outcome of the cultural-evolutionary control of memory distortions. Some ways of testing aspects of this proposal are outlined. (shrink)

The Romantic- and Revolution-era French naturalist Jean-Baptiste Lamarck is an important precursor for Jablonka’s and Ginsburg’s theory of living beings as beings that learn. Lamarck defined living beings as beings that compose and create. Like Jablonka and Ginsburg’s learning theory, Lamarck’s composing and creating theory locates life in the capacity for a kind of purposeful striving. A consideration of his theory can suggest fundamental questions for Jablonka and Ginsburg regarding the relations among what they call “vivaciousness,” the state of living (...) organisms, learning, and evolutionary transformation. (shrink)