Georg Theiner

As portrayed in Andy Clark’s extended mind thesis, human minds are inherently disposed to expand their reach outwards, incorporating and feeding off an open-ended variety of tools and scaffolds to satisfy their hunger for cognitive expansion. According to Steve Fuller’s heterodox Christian vision of transhumanism, humans are deities in the making, destined to redeem their fallen state with the help of modern science and technology. In this chapter, I re-examine Clark’s EMT through the prism of Fuller’s transhumanism, with the aim of unearthing a subterranean influence of theological tropes that are sweeping along beneath the naturalistic veneer of Clark’s thesis. Starting from four theological principles, which Fuller regards as foundational to his version of transhumanism, I review the philosophical narrative which, in Fuller’s view, provides the best philosophical motivation for the contemporary transhumanist project. On the basis of my reconstruction, I show how distant intellectual offshoots of the same principles mobilized by Fuller are also at play in Clark’s EMT – dressed up in secular garb, for sure, and in a materialistically inflected form, yet with a recognizably transhumanist bent. Undertaking this “archeology” of the EMT takes us surprisingly deep into the history of Western thought – to a point where Clark’s evocative “natural-born cyborg” image of humanity, with its emphasis on the radical openness of human nature to transcend itself, comes into view as a subtly blended continuation of certain historically consequential articulations of the Christian doctrine that humans are born “in the image and likeness” of God.

The notion of 'natural kinds' has been central to contemporary discussions of metaphysics and philosophy of science. In recent years, essentialism has been the dominant account of natural kinds among philosophers, but the essentialist view has encountered resistance. Informed by detailed examination of classification in the natural and social sciences, Prof. Muhammad Ali Khalidi argues against essentialism and for a naturalist account of natural kinds. By looking at case studies drawn from diverse scientific disciplines, from fluid mechanics to virology and polymer science to psychiatry, the author argues that natural kinds are nodes in causal networks. On the basis of this account, he maintains that there can be natural kinds in the social sciences as well as the natural sciences.

According to the “extended mind” thesis, a significant portion of human cog-nition does not occur solely inside the head, but literally extends beyond the brain into the body and the world around us (Clark & Chalmers 1998; Clark 2003, 2008; Wilson 1995, 2004; Rowlands 1999, 2010; Menary 2007, 2012; Sutton 2010; Theiner 2011). One way to understand this thesis is that as human beings, we are particularly adept at creating and recruiting environmental props and scaffolds (media, tools, artifacts, symbol systems) for the purpose of solving problems that would otherwise lie beyond our cognitive reach. We manipulate, scaffold, and re-design our environments in ways that transform the nature of difficult tasks that would baffle our unaided biological brains (e.g., math, logic, sequential problem-solving) into simpler types of problems that we are naturally much better equipped to solve. A central tenet of the “extended mind” thesis, then, is that “much of what matters for human-level intelligence is hidden not in the brain, nor in the technology, but in the complex and iterated interactions and collaborations between the two” (Clark 2001: 154). Over the past fifteen years or so, the “extended mind” thesis has become a hot ticket in the philosophy of mind. As with all great ideas, the thesis was hardly conceived ex nihilo, but builds on, and re-articulates many earlier strands of thought. Unfortunately, many of those cognate strands have become marginalized in contemporary philosophy of mind and psychology, and do not receive the amount of attention they deserve. Part of what we hope to accomplish with this special issue is to reverse this trend, and to rekindle the dialogue between the “extended mind” thesis and its historical predecessors.

Benjamin Franklin famously wrote that “the good [that] men do separately is small compared with what they may do collectively” (Isaacson 2004). The ability to join with others in groups to accomplish goals collectively that would hopelessly overwhelm the time, energy, and resources of individuals is indeed one of the greatest assets of our species. In the history of humankind, groups have been among the greatest workers, builders, producers, protectors, entertainers, explorers, discoverers, planners, problem-solvers, and decision-makers. During the late 19th and early 20th century, many social scientists employed the notorious “group mind” idiom to express the sensible idea that groups can function as the seats of cognition, intelligence, and agency in their own right (Allport 1968; Wilson 2004). In their quest to stress (rightly) that group phenomena are something “over and above” the sum of individual contributions, a fondness for vitalist metaphors led them to believe (wrongly) that genuine group cognition must be the result of tapping into individualistically inaccessible, “holistic” forces. Today, inspired in part by historically unparalleled forms of mass collaboration enabled by the internet, it has once again become popular to speak of collective intelligence, group agency, or even the emergence of a “global brain” (cf. the wiki-edited MIT Handbook of Collective Intelligence). In this chapter, I review some contemporary developments of the idea of group cognition, defined broadly as the collaborative performance of cognitive tasks such as remembering, problem-solving, decision-making, or verbal creativity for the purpose of producing a group-level outcome. My discussion serves a two-fold purpose. First, by discussing how the idea of group cognition can be operationalized, I seek to show that we can retain some central theoretical insights of the “group mind” thesis without succumbing to its eccentric metaphysical overtones. Second, by providing a useful array of generalizable taxonomic resources, I hope to foster greater degrees of mutual awareness among insufficiently integrated areas of research on group performance.

In my dissertation, I explore the remarkable talent of human beings to modify and co-opt resources of their material and socio-cultural environment, and integrate them with their biological capacities in order to enhance their cognitive prowess. In the first part, I clarify and defend the claim – known as the extended mind thesis – that a significant portion of human cognition literally extends beyond the head into the world, actively incorporating our bodies and an intricate web of material resources (Clark, 2003, 2008; Wilson, 2004). Yet since much of distinctively human cognition occurs when we think in groups, I argue that the bias of this thesis to view cognition as an essentially solitary (albeit bodily or technologically extended) activity is misplaced. In the second part, I re-deploy the idea of cognitive extensions to establish a scientifically respectable version of the group mind thesis – i.e., the claim that groups can have emergent cognitive properties and capacities in their own right.

In approaching the question of whether groups of people can have cognitive capacities that are fundamentally different than the cognitive capacities of the individuals within the group, we lay out a Multiple, Interactive Levels of Cognitive Systems (MILCS) framework. The goal of MILCS is to explain the kinds of cognitive processes typically studied by cognitive scientists, such as perception, attention, memory, categorization, decision making, problem solving, and judgment. Rather than focusing on high-level constructs such as modules in an information processing flow diagram or internal representations, MILCS focuses on mechanisms that allow systems to engage in flexible, adaptive behavior. Examples of these mechanisms are network structure-process pairs that: combine data from perception with top-down theories, achieve consistency and consensus through information exchange, selectively attend to information globally assessed as relevant, and develop specialized units from originally homogeneous networks through competition among the units. Two such systems are considered in some detail -- lateral inhibition within a network for selecting from a candidate set the option that is most attractive, and a diffusion process for accumulating evidence to reach a generally rapid and accurate decision. These system descriptions are aptly applied at multiple levels, including within and across people. These systems provide accounts that unify cognitive processes across multiple levels, can be expressed in a common vocabulary provided by network science, are inductively powerful yet appropriately constrained, and are applicable to a large number of superficially diverse cognitive systems. Given that people are typically highly motivated to participate in strong groups, cognitively resourceful people will tend to form groups that effectively employ cognitive systems at higher levels than the individuals. The impressive cognitive capacities of individual people do not eliminate the need to talk about group cognition. Instead, smart people generally form smart groups.

Proponents of the “literacy” thesis share with proponents of the “extended mind” thesis the viewpoint that communication systems such as language or writing have cognitive implications that go beyond their purely social and communicative purposes. Conceiving of media as extensions of the mind thus has the potential to bring together and cross-fertilize research programs that are currently placed in distant corners of the study of mind, language, and society. In this issue, we bring together authors with a diverse set of interests to identify promising areas of overlap, blaze new trails for us to explore, but also to highlight dissonances and challenges that will have to be addressed in future work

Talk of group minds has arisen in a number of distinct traditions, such as in sociological thinking about the “madness of crowds” in the 19th-century, and more recently in making sense of the collective intelligence of social insects, such as bees and ants. Here we provide an analytic framework for understanding a range of contemporary appeals to group minds and cognate notions, such as collective agency, shared intentionality, socially distributed cognition, transactive memory systems, and group-level cognitive adaptations.

The “extended mind” thesis (Clark, 2008) has focused primarily on the interactions between single individuals and cognitive artifacts, resulting in a relative neglect of interactions between people. At the same time, the idea that groups can have cognitive properties of their own has gained new ascendancy in various fields concerned with collective behavior. My main goal in this paper is to propose an understanding of group cognition as an emergent form of socially distributed cognition. To that end, I first clarify the relevant notions of cognition and emergence that are at play in the contemporary debate. I then apply our conceptual framework to recent developments in the theory of transactive memory systems (Wegner, 1986), arguing that the idea of group cognition is neither trivial nor shrouded in metaphysical mystery.

The ‘extended mind’ thesis asserts that cognitive processes are not bound by the skull or even skin of biological individuals, but actively incorporate environmental structures such as symbols, tools, artifacts, media, cultural practices, norms, groups, or institutions. By distributing cognition across space, time, and people in canny ways, we circumvent or overcome the biological limitations of our brains. Human beings are creative, albeit opportunistic experts in cognitive ‘self-transcendence.’ This entry surveys discussions of EM in philosophy of mind and cognitive science which point to this overarching theme.

Conventional wisdom in the philosophy of mind holds that (1) minds are exclusively possessed by individuals, and that (2) no constitutive part of a mind can have a mind of its own. For example, the paradigmatic minds of human beings are in the purview of individual organisms, associated closely with their brains, and no parts of the brain that are constitutive of a human mind are considered as capable of having a mind. Let us refer to the conjunction of (1) and (2) as standard individualism about minds (SIAM). Put succinctly, SIAM says that all minds are singular minds. This conflicts with the group mind thesis (GMT), understood as the claim that there are collective types of minds that comprise two or more singular minds among their constitutive parts. The related concept of group cognition refers to psychological states, processes, or capacities that are attributes of such collective minds. In recent years, the once-discredited concept of group cognition has shown definite signs of a comeback in the social sciences, some regions of cognitive science, and among philosophers concerned with collective agency. However, there are important differences among their respective views of why some psychological property should count as a group level phenomenon. If we want to understand these differences, it is critical that we develop a shared ‘lingua franca’ that we can use to taxonomize different variants of group cognition. It is the goal of my paper to contribute to this larger enterprise. The paper is organized as follows. First, I elaborate on the distinction between singular and group minds, and draw a distinction between hive cognition, collective cognition, and socially distributed cognition. Then I briefly clarify the concept of mind that we can plausibly take to be at play in the present debate. In the rest of the paper, I sketch an analysis of the emergent character of socially distributed cognition that is free from the metaphysical shackles of vitalism. I close with a few remarks on the idea that there are multiple levels of cognition.

What drives much of the current philosophical interest in the idea of group cognition is its appeal to the manifestation of psychological properties—understood broadly to include states, processes, and dispositions—that are in some important yet elusive sense emergent with respect to the minds of individual group members. Our goal in this paper is to address a set of related, conditional questions: If human mentality is real yet emergent in a modest metaphysical sense only, then: (i) What would it mean for a group to have emergent cognitive states? (ii) Is this even a metaphysically coherent view? (iii) Relative to which notion of emergence do we have reason to believe that certain groups in fact have emergent cognitive states? We shall argue that evidence from a wide variety of social science domains makes it plausible that there are group cognitive states and processes no less metaphysically emergent than human cognitive (and other special science) states and processes.

Does cognition sometimes literally extend into the extra-organismic environment (Clark, 2003), or is it always “merely” environmentally embedded (Rupert, 2004)? Underlying this current border dispute is the question about how to individuate cognitive processes on principled grounds. Based on recent evidence about the active role of representation selection and construction in learning how to reason (Stenning, 2002), I raise the question: what makes two distinct, modality-specific pen-and-paper manipulations of external representations – diagrams versus sentences – cognitive processes of the same kind, e.g. episodes of syllogistic reasoning? In response, I defend a “division of labor” hypothesis, according to which external representations are dependent on perceptually grounded neural representations and mechanisms to guide our behavior; these internal mechanisms, however, are dependent on external representations to have their syllogistic content fixed. Only their joint contributions qualify the extended computational process as an episode of syllogistic reasoning in good standing.

In recent years, philosophical developments of the notion of distributed and/or scaffolded cognition have given rise to the “extended mind” thesis. Against the popular belief that the mind resides solely in the brain, advocates of the extended mind thesis defend the claim that a significant portion of human cognition literally extends beyond the brain into the body and a heterogeneous array of physical props, tools, and cultural techniques that are reliably present in the environment in which people grow, think, and act (Clark and Chalmers 1998; Clark 1997, 2003, 2008; Wilson 2004; Rowlands 1999, 2012; Menary 2007; Theiner 2011). However, as commentators who are friendly to the idea of distributed cognition have pointed out, the philosophical debate over extended cognition has predominantly focused on the impact of tools on our thinking while somewhat neglecting the distinctively social and cultural dimensions of cognitive scaffolding (Sterelny 2004, 2010; Caporael 1997a, 1997b; Smith and Semin 2004; Wilson 2005; Barnier et al. 2008; Sutton et al. 2010; Theiner, Allen, and Goldstone 2010). To reorient the reigning paradigm, Hutchins (2010, 445) has recently proposed the “hypothesis of enculturated cognition” (HEnC) as an alternative to Clark’s (2003, 2008) largely individualistic vision of the extended mind. According to the HEnC, the “ecological assemblies of human cognition make pervasive use of cultural products” and are typically “assembled … in ongoing cultural practices” (ibid.). Cultural practices, for Hutchins, are essentially “the things people do in interaction with one another” (ibid., 440). My goal in this chapter is to follow up on Hutchins’s call to “spur the program forward” (ibid., 445), by generalizing Kirsh and Maglio’s (1994) distinction between pragmatic and epistemic actions from the level of individuals to the level of groups. The concept of a collective epistemic action refers to the ways in which groups of people actively change the structure of their social organization, with the epistemic goal of reshaping and augmenting their cognitive performance as integrated collectivities. By placing a renewed emphasis on the interactions between people, rather than between people and their tools, I hope to reconnect the cognitive-scientifically-driven “extended mind” thesis with complementary areas of social-scientific research in which groups are analyzed as the seats of action and cognition in their own right. In particular, the literature to which I aim to build a bridge in this paper is, on the one hand, certain segments of social and organizational psychology (Larson and Christensen 1993; Hinsz et al. 1997; Mohammed and Dumville 2001), and, on the other hand, theories of collective and institutional action (Ostrom 1990; List and Pettit 2011).

Proponents of the “literacy” thesis share with proponents of the “extended mind” thesis the viewpoint that communication systems such as language or writing have cognitive implications that go beyond their purely social and communicative purposes. Conceiving of media as extensions of the mind thus has the potential to bring together and cross-fertilize research programs that are currently placed in distant corners of the study of mind, language, and society. In this issue, we bring together authors with a diverse set of interests to identify promising areas of overlap, blaze new trails for us to explore, but also to highlight dissonances and challenges that will have to be addressed in future work.

Wegner, Giuliano, and Hertel (1985) defined the notion of a transactive memory system (TMS) as a group level memory system that “involves the operation of the memory systems of the individuals and the processes of communication that occur within the group (p. 191). Those processes are the collaborative procedures (“transactions”) by which groups encode, store, and retrieve information that is distributed among their members. Over the past 25+ years, the conception of a TMS has progressively garnered an increased interest among social and organizational psychologists, communication scholars, and management theorists (Ren & Argote 2011). But there remains considerable disagreement about how exactly Wegner’s appeal to group memory should be understood. My goal in this paper is contribute to this debate, by articulating more clearly the value of conceptualizing groups as TMSs. This value, I argue, consists in providing us with a blueprint for how to explain group memory in terms of collective information-processing mechanisms. Collective information-processing mechanisms are dependent on, and interact with, the brain-bound information-processing of individuals, but cannot be reduced to the latter. In my analysis, I lean on extant accounts of mechanistic explanation in the philosophy of science (Bechtel & Richardson 1993; Machamer, Darden, & Craver 2000; Wimsatt 2007) that have been used to analyze the explanatory practices of psychology and cognitive neuroscience (Bechtel 2008, 2009). Based on my reconstruction of Wegner’s conceptualization of a TMS, I argue that the reality of emergent group cognition is compatible with its mechanistic explanation. More generally, my analysis shows that group cognition cannot be reduced to individual cognition, while avoiding the false dilemma between “wholism” and “nothing but-ism” which has hampered traditional construals of the “group mind” thesis (Allport 1968).

My goal in this paper is to defend the plausibility of a particular version of collectivism – understood as the evolutionary claim that individual-level cognition is systematically biased in favor of aggregate-level regularities – in the domain of language. Chomsky's (1986) methodological promotion of I-language (speaker-internal knowledge) and the corresponding demotion of E-language (aggregate output of a population of speakers) has led mainstream cognitive science to view language essentially as a property of individual minds/brains whose evolution is best explained as a result of the natural selection of an innate language faculty (Pinker 1994). Such a framework is largely oblivious to the linguistic dynamics arising from iterated learning, i.e. the fact that linguistic information must be periodically mapped from its I-linguistic into its E-linguistic medium and back in order to persist over time. Recent expression/induction models of language evolution, which are heavily inspired by the simulation-based methodology of Artificial Life, suggest that linguistic universals, such as compositional and recursive structure, can emerge from cultural selection alone (Brighton et al. 2005). I will conclude that there is both a biological and a cultural route towards collectivism.

The cross-disciplinary framework of Material Engagement Theory (MET) has emerged as a novel research program that flexibly spans archeology, anthropology, philosophy, and cognitive science. True to its slogan to ‘take material culture seriously’, “MET wants to change our understanding of what minds are and what they are made of by changing what we know about what things are and what they do for the mind” (Malafouris 2013, 141). By tracing out more clearly the conceptual contours of ‘material engagement,’ and firming up its ontological commitments, the main goal of this article is to help refine Malafouris’ fertile approach. In particular, we argue for a rapprochement between MET and the tradition of Cultural-Historical Activity Theory, based on the ‘Vygotskian’ hypothesis of scaffolded and/or distributed cognition.

For Descartes, minds were essentially non-extended things. Contemporary cognitive science prides itself on having exorcised the Cartesian ghost from the biological machine. However, it remains committed to the Cartesian vision of the mental as something purely inner. Against the idea that the mind resides solely in the brain, advocates of the situated and embodied nature of cognition have long stressed the importance of dynamic brain-body-environment couplings, the opportunistic exploitation of bodily morphology, the strategic performance of epistemically potent actions, the generation and use of external representations, and the cognitive scaffolding provided by artifacts and social-cultural practices. According to the “extended mind” thesis, a significant portion of human cognition literally extends beyond the brain into the body and its environment. My goal in this book is to clarify the nature and scope of this thesis, and to defend its central insight that cognition is not confined to the boundaries of the biological individual.

Our aim in this chapter is to contribute to a greater appreciation of Bourdieu’s work within debates on embodied, extended and distributed cognition, grouped under the general heading of externalism (Rowlands 2003, Carter et al. 2014). We seek to draw out several pertinent elements of Bourdieu’s theory of social practice, and show how they variously resonate with, enrich, or problematize key externalist theses. We begin with an overview of the main elements of Bourdieu’s theoretical enterprise, in order to provide essential background for the ensuing discussion. We then address a number of themes connecting Bourdieu’s theory with facets of cognitive externalism, which we organize under the headings of diachronic co-dependence, instrumental dependence, and co-constitutive dependence. Following this we turn our attention to epistemic externalism, where we find promising ground for dialogue with Bourdieu in recent developments in virtue epistemology, focusing our analysis on a recent proposal concerning knowledge-how by Carter & Pritchard (2015). We conclude with an assessment of Bourdieu’s standing with respect to these currents, and prospects for further engagement.

In this paper, we approach the idea of group cognition from the perspective of the “extended mind” thesis, as a special case of the more general claim that systems larger than the individual human, but containing that human, are capable of cognition (Clark, 2008; Clark & Chalmers, 1998). Instead of deliberating about “the mark of the cognitive” (Adams & Aizawa, 2008), our discussion of group cognition is tied to particular cognitive capacities. We review recent studies of group problem-solving and group memory which reveal that specific cognitive capacities that are commonly ascribed to individuals are also aptly ascribed at the level of groups. These case studies show how dense interactions among people within a group lead to both similarity-inducing and differentiating dynamics that affect the group's ability to solve problems. This supports our claim that groups have organization-dependent cognitive capacities that go beyond the simple aggregation of the cognitive capacities of individuals. Group cognition is thus an emergent phenomenon in the sense of Wimsatt (1986). We further argue that anybody who rejects our strategy for showing that cognitive properties can be instantiated at multiple levels in the organizational hierarchy on a priori grounds is a “demergentist,” and thus incurs the burden of proof for explaining why cognitive properties are “stuck” at a certain level of organizational structure. Finally, we show that our analysis of group cognition escapes the “coupling-constitution” charge that has been leveled against the extended mind thesis (Adams & Aizawa, 2008).