Volume 11 · Number 2 · Pages 204–212
Lived Experience and Cognitive Science Reappraising Enactivism’s Jonasian Turn

Mario Villalobos & Dave Ward

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Abstract

Context: The majority of contemporary enactivist work is influenced by the philosophical biology of Hans Jonas. Jonas credits all living organisms with experience that involves particular “existential” structures: nascent forms of concern for self-preservation and desire for objects and outcomes that promote well-being. We argue that Jonas’s attitude towards living systems involves a problematic anthropomorphism that threatens to place enactivism at odds with cognitive science, and undermine its legitimate aims to become a new paradigm for scientific investigation and understanding of the mind. Problem: Enactivism needs to address the tension between its Jonasian influences and its aspirations to become a new paradigm for cognitive science. By relying on Jonasian phenomenology, contemporary enactivism obscures alternative ways in which phenomenology can be more smoothly integrated with cognitive science. Method: We outline the historical relationship between enactivism and phenomenology, and explain why anthropomorphism is problematic for a research program that aspires to become a new paradigm for cognitive science. We examine the roots of Jonas’s existential interpretation of biological facts, and describe how and why Jonas himself understood his project as founded on an anthropomorphic assumption that is incompatible with a crucial methodological assumption of scientific enquiry: the prohibition of unexplained natural purposes. We describe the way in which phenomenology can be integrated into Maturana’s autopoietic theory, and use this as an example of how an alternative, non-anthropomorphic science of the biological roots of cognition might proceed. Results: Our analysis reveals a crucial tension between Jonas’s influence on enactivism and enactivism’s paradigmatic aspirations. This suggests the possibility of, and need to investigate, other ways of integrating phenomenology with cognitive science that do not succumb to this tension. Implications: In light of this, enactivists should either eliminate the Jonasian inference from properties of our human experience to properties of the experience of all living organisms, or articulate an alternative conception of scientific enquiry that can tolerate the anthropomorphism this inference entails. The Maturanian view we present in the article’s final section constitutes a possible framework within which enactivist tools and concepts can be used to understand cognition and phenomenology, and that does not involve a problematic anthropomorphism. Constructivist content: Any constructivist approach that aims for integration with current scientific practice must either avoid the type of anthropomorphic inference on which Jonas bases his work, or specify a new conception of scientific enquiry that renders anthropomorphism unproblematic.

Key words: Human experience, living beings, autopoietic theory, enactivism, Hans Jonas, phenomenology.

Citation

Villalobos M. & Ward D. (2016) Lived experience and cognitive science reappraising enactivism’s jonasian turn. Constructivist Foundations 11(2): 204–212. http://constructivist.info/11/2/204

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References

Bailly F. & Longo G. (2006) Mathématiques et sciences de la nature. La singularité physique du vivant. Hermann, Paris. ▸︎ Google︎ Scholar
Barandiaran X. E. & Egbert M. D. (2014) Norm-establishing and norm-following in autonomous agency. Artificial Life 20: 5–28. ▸︎ Google︎ Scholar
Barandiaran X. E. (2016) Autonomy and enactivism. Towards a theory of sensorimotor autonomous agency. Topoi. In: Press. http://cepa.info/2471
Barandiaran X. E., Di Paolo E. & Rohde M. (2009) Defining agency: Individuality, normativity, asymmetry and spatio-temporality in action. Journal of Adaptive Behavior 17(5): 367–386. http://cepa.info/324
Barbaras R. (2008) Life, movement, and desire. Research in Phenomenology 38: 3–17. ▸︎ Google︎ Scholar
Barrett N. F. (2015) The normative turn in enactive theory: An examination of its roots and implications. Topoi. Online first. http://cepa.info/2473
Bateson G. (1972) Steps to an ecology of mind. University of Chicago Press, Chicago. ▸︎ Google︎ Scholar
Berthoz A. & Petit J.-L. (eds.) (2014) Complexité-simplexité. Collège de France, Paris. ▸︎ Google︎ Scholar
Berthoz A. (2009) La simplexité. Odile Jacob, Paris. ▸︎ Google︎ Scholar
Berthoz A. (2013) La vicariance. Odile Jacob, Paris. ▸︎ Google︎ Scholar
Boden M. (2000) Autopoiesis and life. Cognitive Science Quarterly 1: 117–145. http://cepa.info/2469
Capra F. (1996) The web of life: A new understanding of living systems. Anchor Books, New York. ▸︎ Google︎ Scholar
Cowley S. J. & Gahrn-Andersen R. (2015) Deflating autonomy: Human interactivity in the emerging social world. Intellectica 63: 49–63. ▸︎ Google︎ Scholar
Cuffari E. C., Di Paolo E. & De Jaegher H. (2014) From participatory sense-making to language: There and back again. Phenomenology and the Cognitive Sciences 14(4): 1089–1125. http://cepa.info/2516
Davis B. (1996) Teaching mathematics: Toward a sound alternative. Garland, New York. ▸︎ Google︎ Scholar
De Jaegher H. & Di Paolo E. (2007) Participatory sense-making: An enactive approach to social cognition. Phenomenology and the Cognitive Sciences 6: 485–507. http://cepa.info/2387
De Jesus P. (2015) Autopoietic enactivism, phenomenology and the deep continuity between life and mind. Phenomenology and Cognitive Science. Online first. http://cepa.info/2385
Di Paolo E. A. (2003) Organismically-inspired robotics: Homeostatic adaptation and teleology beyond the closed sensorimotor loop. In: Murase K. & Asakura T. (eds.) Dynamical Systems Approach to Embodiment and Sociality. Advanced Knowledge International, Adelaide: 19–42. http://cepa.info/2514
Di Paolo E. A. (2005) Autopoiesis, adaptivity, teleology, agency. Phenomenology and the Cognitive Sciences 4(4): 429–452. http://cepa.info/2269
Di Paolo E. A. (2009) Extended life. Topoi 28(1): 9–21. http://cepa.info/322
Di Paolo E. A. (2009) Overcoming autopoiesis. In: Magalhães R. & Sanchez R. (eds.) Autopoiesis in organization: Theory and practice. Emerald, Bingley: 43–68. http://cepa.info/2366
Di Paolo E. A., Rohde M. & De Jaegher H. (2010) Horizons for the enactive mind: Values, social interaction, and play. In: Stewart J., Gapenne O. & Di Paolo E. A. (eds.) Enaction: Towards a new paradigm for cognitive science. MIT Press, Cambridge MA: 33–87. http://cepa.info/2413
Di Pellegrino G., Fadiga L., Fogassi L., Gallese V. & Rizzolatti G. (1992) Understanding motor events: A neurophysiological study. Experimental Brain Research 91: 176–180. ▸︎ Google︎ Scholar
Dretske F. (1981) Knowledge and the flow of information. MIT Press, Cambridge MA. ▸︎ Google︎ Scholar
Dreyfus H. L. (1988) Husserl’s epiphenomenology. In: Otto H. R. & Tuedio J. A. (eds.) Perspectives on Mind. Reidel, Dordrecht: 85–104. ▸︎ Google︎ Scholar
Froese T. & Di Paolo E. A. (2009) Sociality and the life-mind continuity thesis. Phenomenology and the Cognitive Sciences 8: 439–436. ▸︎ Google︎ Scholar
Froese T. & Di Paolo E. A. (2011) The enactive approach: Theoretical sketches from cell to society. Pragmatics and Cognition 19(1): 1–36. http://cepa.info/2367
Froese T. & Stewart J. (2010) Life after Ashby: Ultrastability and the autopoietic foundations of biological autonomy. Cybernetics and Human Knowing 17(4): 7–50. http://cepa.info/387
Froese T. & Ziemke T. (2009) Enactive artificial intelligence: Investigating the systemic organization of life and mind. Artificial Intelligence 173(3–4): 466–500. http://cepa.info/279
Froese T. (2011) Breathing new life into cognitive science. AVANT. The Journal of the Philosophical-Interdisciplinary Vanguard 2(1): 113–129. http://cepa.info/412
Gaitsch P. (2014) The small change of non-idealistic correlationism. Constructivist Foundations 10(1): 106–108. http://constructivist.info/10/1/106
Gallagher S. (2012) On the possibility of naturalizing phenomenology. In: Zahavi D. (ed.) The Oxford handbook of contemporary phenomenology. Oxford University Press, Oxford: 70–93. http://cepa.info/2279
Graziano M. S. A. (2009) The intelligent movement machine: An ethological perspective on the primate motor system. Oxford University Press, Oxford. ▸︎ Google︎ Scholar
Graziano M. S. A. (2015) Ethological action maps: A paradigm shift for the motor cortex. Trends in Cognitive Sciences 20(2): 121–132. ▸︎ Google︎ Scholar
Harvey M. I., Gahrn-Andersen R. & Steffensen S. V. (2016) Interactivity and enaction in human cognition. Constructivist Foundations 11(2): THIS VOLUME. http://constructivist.info///000
Hauser M. D., Chomsky N. & Fitch W. T. (2002) The faculty of language: What is it, who has it, and how did it evolve? Science 298(5598): 1569–1579. ▸︎ Google︎ Scholar
Heidegger M. (1962) Being and time. Blackwell, Oxford. ▸︎ Google︎ Scholar
Hodges B. (2009) Ecological pragmatics: Values, dialogical arrays, complexity, and caring. Pragmatics & Cognition 17(3): 628–625. ▸︎ Google︎ Scholar
Hösle V. (2008) Hans Jonas’s position in the history of German philosophy. In: Tirosh-Samuelson H. & Wiese C. (eds.) The legacy of Hans Jonas. Brill, Leiden: 19–38. ▸︎ Google︎ Scholar
Husserl E. (1973) Zur Phänomenologie der Intersubjektivität. Texte aus dem Nachlass. Zweiter Teil: 1921–1928. Martinus Nijhoff, The Hague. ▸︎ Google︎ Scholar
Hutto D. D. & Myin E. (2013) Radicalizing enactivism: Basic minds without content. MIT Press, Cambridge MA. ▸︎ Google︎ Scholar
Jonas H. (1966) The phenomenon of life. Toward a philosophical biology. Harper & Row, New York. Reprinted in 2000 by Northwestern University Press. ▸︎ Google︎ Scholar
Kaas J. H., Gharbawie O. A. & Stepniewska I. (2013) Cortical networks for ethologically relevant behaviors in primates. American Journal of Primatology 75(5): 407–414. ▸︎ Google︎ Scholar
Kennedy J. S. (1992) The new anthropomorphism. Cambridge University Press, Cambridge MA. ▸︎ Google︎ Scholar
Köchy K. (2008) Biophilosophie zur Einführung. Junius, Hamburg. ▸︎ Google︎ Scholar
Kuhn T. (1962) The structure of scientific revolutions. University of Chicago Press, Chicago. ▸︎ Google︎ Scholar
Kyselo M. (2014) The body social: An enactive approach to the self. Frontiers in Psychology 5: 986. http://cepa.info/2517
Lettvin J. Y., Maturana H. R., McCulloch W. S. & Pitts W. H. (1959) What the frog’s eye tells the frog’s brain. Proceedings of the Institute of Radio Engineers (IRE) 47(11): 1940–1951. http://cepa.info/518
Lettvin J. Y., Maturana H. R., Pitts W. H. & McCulloch W. S. (1961) Two remarks on the visual system of the frog. In: Rosenblith W. A. (ed.) Sensory communications. MIT Press, Cambridge MA and Wiley, New York: 757–776. ▸︎ Google︎ Scholar
Lindberg S. (2005) Hans Jonas’s theory of life in the face of responsibility. In: Lembeck K.-H., Mertens K. & Orth E. W. (eds.) Phänomenologische Forschungen. Felix Meiner Verlag, Hamburg: 175–192. ▸︎ Google︎ Scholar
Lipps T. (1903) Einfühlung, innere Nachahmung, und Organempfindung. Archiv für die Gesamte Psychologie I (2), W. Engelmann, Leipzig: 185–204. ▸︎ Google︎ Scholar
Longo G. & Montévil M. (2012) Randomness increases order in biological evolution. In: Dinneen M., Khoussainov B. & Nies A. (eds.) Computation, physics and beyond. Lecture Notes in Computer Science 7160, Springer, Berlin: 289–308. ▸︎ Google︎ Scholar
Maldonado P. E., Maturana H. R. & Varela F. J. (1988) Frontal and lateral visual system in birds. Frontal and lateral gaze. Brain, Behavior and Evolution 32(1): 57–62. ▸︎ Google︎ Scholar
Margulis L. & Sagan D. (1995) What is life? Simon and Schuster, New York. ▸︎ Google︎ Scholar
Maturana H. R. & Dávila X. Y. (2015) El árbol del vivir. Edited by Mauricio Vlastelica Panel. MVP Editores, Santiago Chile. ▸︎ Google︎ Scholar
Maturana H. R. & Frenk S. (1963) Directional movement and horizontal edge detectors in the pigeon retina. Science 142(3594): 977–979. http://cepa.info/527
Maturana H. R. & Frenk S. (1965) Synaptic connections of the centrifugal fibers in the pigeon retina. Science 150(3694): 359–361. http://cepa.info/533
Maturana H. R. & Varela F. J. (1980) Autopoiesis and cognition: The realization of the living. Reidel, Dordrecht. ▸︎ Google︎ Scholar
Maturana H. R. & Varela F. J. (1982) Color-opponent responses in the avian lateral geniculate: A study in the quail (Coturnix coturnix japonica). Brain Research 247(2): 227–241. http://cepa.info/564
Maturana H. R. & Varela F. J. (1987) The tree of knowledge: The biological roots of human understanding. Shambhala, Boston. ▸︎ Google︎ Scholar
Maturana H. R. & Varela F. J. (1992) The tree of knowledge. Revised edition. Shambhala, Boston MA. ▸︎ Google︎ Scholar
Maturana H. R. (1959) Number of fibres in the optic nerve and the number of ganglion cells in the retina of Anurans. Science 183 (4672): 1406–1407. ▸︎ Google︎ Scholar
Maturana H. R. (1978) Biology of language: The epistemology of reality. In: Miller G. & Lenneberg E. (eds.) Psychology and biology of language and thought: Essays in honor of Eric Lenneberg. Academic Press, New York: 27–63. http://cepa.info/549
Maturana H. R. (1988) Reality: The search for objectivity or the quest for a compelling argument. Irish Journal of Psychology 9(1): 25–82. http://cepa.info/598
Maturana H. R. (1990) Science and daily life: The ontology of scientific explanations. In: Krohn W., Kuppers G. & Nowotny H. (eds.) Selforganization: Portrait of a scientific revolution. Springer: 12–35. http://cepa.info/607
Maturana H. R. (1995) Biology of self-consciousness. In: Tratteur G. (ed.) Consciousness: Distinction and reflection. Bibliopolis, Naples: 145–175. http://cepa.info/639
Maturana H. R. (1995) The nature of time. Instituto de Terapia Cognitiva, Santiago. http://cepa.info/638
Maturana H. R. (1996) Biología de lo psíquico. In: Maturana H. R., El Sentido de lo Humano. Dolmen Ediciones, Santiago: 183–198. ▸︎ Google︎ Scholar
Maturana H. R. (2002) Autopoiesis, structural coupling and cognition: A history of these and other notions in the biology of cognition. Cybernetics and Human Knowing 9(3–4): 5–34. http://cepa.info/685
Maturana H. R. (2003) The biological foundations of self-consciousness and the physical domain of existence. In: Luhmann N., Maturana H., Namiki M., Redder V. & Varela F. (eds.) Beobachter: Konvergenz der Erkenntnistheorien? Second edition. Wilhelm Fink, Munich: 47–117. http://cepa.info/609
Maturana H. R., Lettvin J. Y., McCulloch W. S. & Pitts W. H. (1960) Anatomy and physiology of vision in the frog (Rana pipiens). The Journal of General Physiology 43(6): 129–175. ▸︎ Google︎ Scholar
Maturana H. R., Mpodozis J. & Letelier J. C. (1995) Brain, language and the origin of human mental functions. Biological Research 28(1): 15–26. http://cepa.info/642
Maturana H. R., Uribe G. & Frenk S. (1968) A biological theory of relativistic colour coding in the primate retina: A discussion of nervous system closure with reference to certain visual effects. Archivos de Biología y Medicina Experimentales Suplemento 1: 1–30. ▸︎ Google︎ Scholar
Millikan R. G. (1984) Language, thought and other biological categories. MIT Press, Cambridge MA. ▸︎ Google︎ Scholar
Mitchell R. W. & Hamm M. (1996) The interpretation of animal psychology: Anthropomorphism or behavior reading? Behaviour 134: 173–204. ▸︎ Google︎ Scholar
Montebello P. (2003) L’autre métaphysique. Les Presses du réel, Paris. ▸︎ Google︎ Scholar
Moran D. (2000) Introduction to phenomenology. Routledge, London. ▸︎ Google︎ Scholar
Penfield W. & Boldrey E. (1937) Somatic motor and sensory representation in the cerebral cortex of man as studied by electrical stimulation. Brain 60(4): 389–443. ▸︎ Google︎ Scholar
Petit J.-L. (1999) Constitution by movement: Husserl in light of recent neurobiological findings. In: Petitot J., Varela F. J., Pachoud B. & Roy J. M. (eds.) Naturalizing phenomenology: Issues in contemporary phenomenology and cognitive science. Stanford University Press, Stanford: 220–244. ▸︎ Google︎ Scholar
Proulx J. (2015) Mathematics education research as study. For the Learning of Mathematics 35(3): 25–27. ▸︎ Google︎ Scholar
Reid D. (1996) Enactivism as a methodology. Proceedings of PME-20, Volume 4. PME, Valencia: 203–210. http://cepa.info/2519
Rizzolatti G. & Sinigaglia C. (2006) So quel che fai. Il cervello che agisce e i neuroni specchio. Raffaello Cortina Editore, Milano. ▸︎ Google︎ Scholar
Rizzolatti G., Gentilucci M., Fogassi L., Luppino G., Matelli M. & Ponzoni Maggi S. (1987) Neurons related to goal-directed motor acts in inferior area 6 of the macaque monkey. Experimental Brain Research 67: 220–224. ▸︎ Google︎ Scholar
Salice A. (2015) The phenomenology of the Munich and Göttingen circles. In: Zalta E. N. (ed.) The Stanford encyclopedia of philosophy (Winter 2015 Edition). ▸︎ Google︎ Scholar
Sheets-Johnstone M. (1999) The primacy of movement. John Benjamins Press, Amsterdam. ▸︎ Google︎ Scholar
Simon R. (1985) A frog’s eye view of the world. Structure is destiny: An interview with Humberto Maturana. The Family Therapy Networker 9(3): 32–37; 41–43. ▸︎ Google︎ Scholar
Smith D. W. (2013) Phenomenology. In: Zalta E. N. (ed.) The Stanford encyclopedia of philosophy (Winter 2013 Edition). http://plato.stanford.edu/archives/win2013/entries/phenomenology
Spiegelberg H. (1994) The phenomenological movement: A historical introduction. Kluwer Academic Publishers, Dordrecht. ▸︎ Google︎ Scholar
Stewart J., Gapenne O. & Di Paolo E. A. (eds.) (2010) Enaction: Towards a new paradigm for cognitive science. MIT Press, Cambridge MA. ▸︎ Google︎ Scholar
Taguchi S. (2006) Das Problem des “Ur-Ich” bei Edmund Husserl. Die Frage nach der selbstverständlichen “Nähe” des Selbst. Springer, Dordrecht. ▸︎ Google︎ Scholar
Thompson E. (2004) Life and mind: From autopoiesis to neurophenomenology. A tribute to Francisco Varela. Phenomenology and the cognitive sciences 3: 381–398. http://cepa.info/1137
Thompson E. (2007) Mind in life. Biology, phenomenology, and the sciences of mind. Harvard University Press, Cambridge MA. ▸︎ Google︎ Scholar
Trnka J. (2016) Hans Jonas on teleology in biology: The relevance of existential philosophy for biological thinking. Límite 10 (34): 41–49. ▸︎ Google︎ Scholar
Tyler T. (2003) If horses had hands. Society & Animals 11: 267–281. ▸︎ Google︎ Scholar
Varela F. J. & Poerksen B. (2004) Truth is what works. In: Poerksen B. (ed.) The certainty of uncertainty: Dialogues introducing constructivism. Imprint Academic, Exeter UK: 85–107. http://cepa.info/2515
Varela F. J. (1979) Principles of biological autonomy. Elsevier North Holland, New York. ▸︎ Google︎ Scholar
Varela F. J. (1984) Living ways of sense-making: A middle path for neuroscience. In: Livingston P. (ed.) Disorder and order. Proceedings of the Stanford International Symposium. Anma Libri, Stanford: 208–224. http://cepa.info/2068
Varela F. J. (1991) Organism: A meshwork of selfless selves. In: Tauber A. (ed.) Organism and the origin of self. Kluwer Academic Publishers, Dordrecht: 79–107. http://cepa.info/1959
Varela F. J. (1992) Autopoiesis and a biology of intentionality. In: McMullin B. (ed.) Proceedings of the workshop “Autopoiesis and perception.” Dublin City University, Dublin: 4–14. http://cepa.info/1274
Varela F. J. (1996) Neurophenomenology: A methodological remedy for the hard problem. Journal of consciousness studies 3(4): 330–349. http://cepa.info/1893
Varela F. J. (1997) Patterns of Life: Intertwining Identity and Cognition. Brain and Cognition 34: 72–87. http://cepa.info/2010
Varela F. J., Letelier J. C., Marín G. & Maturana H. R. (1983) The neurophysiology of avian color vision. Archivos de Biología y Medicina Experimentales 16: 291–303. ▸︎ Google︎ Scholar
Varela F. J., Thompson E. & Rosch E. (1991) The embodied mind: Cognitive science and human experience. MIT Press, Cambridge MA. ▸︎ Google︎ Scholar
Villalobos M. & Ward D. (2015) Living systems: Autopoiesis, autonomy and enaction. Philosophy & Technology 28(2): 225–239. http://cepa.info/2511
Villalobos M. (2015) The biological roots of cognition and the social origins of mind: Autopoietic theory, strict naturalism and cybernetics. Ph.D Thesis, University of Edinburgh. ▸︎ Google︎ Scholar
Vogel L. (1996) The outcry of mute things. Hans Jonas’s imperative of responsibility. In: MacAuley D. (ed.) Minding nature: The philosophers of ecology. Guilford Press, New York: 167–185. ▸︎ Google︎ Scholar
Vörös S. & Gaitsch P. (2016) Desire and/or need for life? Towards a phenomenological dialectic of the organism. In: Tønnessen M., Rattasepp & Oma K. A. (eds.) Thinking about animals in the age of the anthropocene. Lexington Books, Lanham: 135–160. ▸︎ Google︎ Scholar
Weber A. & Varela F. J. (2002) Life after Kant. Natural purposes and the autopoietic foundations of biological individuality. Phenomenology and the cognitive sciences 1(2): 97–125. http://cepa.info/2087
Weber A. (2002) The surplus of meaning: Biosemiotic aspects in Francisco J. Varela’s philosophy of cognition. Cybernetics & Human Knowing 9(2): 11–29. http://cepa.info/2470
Weemans M. & Prévost B. (2014) Introduction. In: Melion W. S., Rothstein B. & Weemans M. (eds.) The anthropomorphic lens. Brill, Leiden: 1–18. ▸︎ Google︎ Scholar
Welton D. (2011) Can a top-down phenomenology of intentional consciousness be integrated with a bottom-up phenomenology of biological systems? Philosophy today 55: 102–113. http://cepa.info/2476
Wynne C. (2004) The perils of anthropomorphism. Nature 428: 606. ▸︎ Google︎ Scholar
Wynne C. (2007) What are animals? Why anthropomorphism is still not a scientific approach to behavior. Comparative Cognition and Behavior Reviews 2: 125–135. ▸︎ Google︎ Scholar
Yolton J. W. (1967) Review of “The Phenomenon of Life: Towards a Philosophical Biology” (by Hans Jonas). The Journal of Philosophy 64(8): 254–258. ▸︎ Google︎ Scholar
Zahavi D. (2007) Phänomenologie für Einsteiger. Wilhelm Fink, Paderborn. ▸︎ Google︎ Scholar

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