Umwelt and autopoiesis

Working Definition

Umwelt and autopoiesis (literally “self-production”) are two pillars of the philosophy of biology and cognitive science that explain how a living system differs from a non-living automaton and how meaning arises for it. Autopoiesis defines the internal organization of life: an autopoietic system (such as a living cell) is a network of metabolic processes that continually produces and repairs the components of which it consists while building a physical boundary (such as a cell membrane) that distinguishes it from its background. Umwelt defines the external, phenomenological dimension of this process: the subjective “self-centered world” carved out of the indifferent physical surroundings (Umgebung), composed exclusively of those signals and objects that matter to a given organism as food, obstacle, mate, or threat. Together, they show that cognition is not a passive copying of the world, but the active maintenance of one's own existence that establishes the boundary between what is significant and what is invisible.

Genesis and Global Lineage

Baltic German biologist Jakob von Uexküll introduced the technical concept of Umwelt in his 1909 book Umwelt und Innenwelt der Tiere (and expanded it in A Foray into the Worlds of Animals and Humans, 1934). Rejecting mechanistic models that treated animals as mere reflex machines responding to physical stimuli, Uexküll described the “functional circle” (Funktionskreis) linking an animal's receptor and effector organs: every species inhabits its own perceptual bubble filled with species-specific carriers of meaning (for a tick, the world consists of three signals: the smell of mammalian butyric acid, a warmth of 37 degrees Celsius, and the texture of skin). Six decades later, in 1971–1972 in Santiago, Chile, neurobiologist Humberto Maturana and his student Francisco Varela coined the term autopoiesis (from Greek auto, “self,” and poiesis, “production”), published in De máquinas y seres vivos (1973; English ed. Autopoiesis and Cognition, 1980). In the late twentieth century, Evan Thompson, Ezequiel Di Paolo, and biosemioticians united the two traditions: because an autopoietic system must continually exchange energy with its surroundings to avoid disintegration, indifferent physical differences (such as a glucose gradient for a bacterium) are transformed into value-laden signs—that is, into an Umwelt.

Central European Lineage

The history of both concepts is deeply intertwined with two scientific centers of the region: Dorpat (present-day Tartu in Estonia) and Vienna. Jakob von Uexküll was born on the Keblas estate in Estonia and received his scientific formation at the Imperial University of Dorpat, where he studied zoology from 1884 to 1889. Dorpat was then the foremost bastion of European biological anti-mechanism, founded by the embryologist Karl Ernst von Baer; it was directly from Baer's concept of species-specific “subjective time” that Uexküll derived his theory of Umwelt. In the 1990s, this legacy was revived at the University of Tartu by the Tartu school of biosemiotics led by Kalevi Kull, who synthesized Uexküll's Dorpat tradition with the concept of the “semiosphere” (1984) developed in the same university town by semiotician Juri Lotman, making Tartu a world center of contemporary biosemiotics. Meanwhile, the direct precursor of autopoiesis in Central Europe was Viennese biologist Ludwig von Bertalanffy (who earned his doctorate at the University of Vienna in 1926). In his Theoretische Biologie (1932) and his 1940s papers on “flowing equilibrium” (Fließgleichgewicht), Bertalanffy defined the living organism as an open system that preserves the constancy of its form solely through the continual breakdown and self-regeneration of its constituent parts.

Why Now

Between 2018 and 2026, Umwelt and autopoiesis experienced a major resurgence across three fields. First, in debates over whether large language models “understand” language (from Emily Bender and Alexander Koller's 2020 “octopus test” paper to the AI agency debates of 2023–2026), autopoiesis became the primary argument against attributing genuine agency or meaning to AI models. As enactivists (Evan Thompson, Tom Froese) point out, a language model is an allopoietic system: its weights do not decay when the power is switched off and the system does not struggle to maintain its own metabolic boundary, so the tokens it generates do not form a genuine Umwelt in which anything is existentially at stake for the system itself. Second, in ecology (popularized by Ed Yong's Pulitzer Prize-winning 2022 book An Immense World), researchers demonstrated that anthropogenic “sensory pollution”—artificial light at night, ocean noise, and electromagnetic smog—devastates wildlife populations not by poisoning their bodies, but by blinding their species-specific Umwelten. Third, in theoretical neurobiology, Karl Friston mathematically formalized the boundary of an autopoietic system using the “Markov blanket” and the free energy principle.

Explanatory Power

Pairing Umwelt and autopoiesis resolves the classic philosophical impasse between naive realism (“the senses copy the world as it is”) and relativism (“everything is a subjective projection”). In the same meadow, an oak tree is a different object in the Umwelt of a forester (measuring timber volume), an owl (seeking a nesting cavity), a bark beetle (boring galleries beneath the bark), and an ant. None of these worlds is a hallucination—each is an objective cross-section through the real properties of the oak, selected for the autopoietic survival of a given species. Transferred by Niklas Luhmann into sociology, the pairing also explains why the subsystems of modern society—law, the economy, science, politics—are so deaf to mutual moral appeals. Each operates like an operationally closed autopoietic system that registers its environment exclusively through the binary code of its own Umwelt: the economy registers an ecological catastrophe only when it is translated into prices and payments, and the legal system only when it takes the form of the distinction between lawful and unlawful.

Axes of Debate

Underappreciated Angle

Although Umwelt theory is associated today with empathetic ecology, its twentieth-century political history is far more ambivalent. In the 1920s and 1930s, Uexküll's writings exerted a profound influence on Martin Heidegger (who in his 1929–1930 lectures contrasted the animal as “poor in world” with the human as “world-forming”), as well as on Ernst Cassirer, Maurice Merleau-Ponty, and Gilles Deleuze. At the same time, in his book Staatsbiologie (1920/1933), Uexküll himself attempted to apply organismic biology to the theory of the state as a living organism threatened by “parasites” and “pathogens,” even while rejecting Darwinian competition and Nazi genetic racial determinism. This duality offers an important warning: concepts that describe an organism as an operationally closed whole brilliantly illuminate the biology of cells and senses, but when used as a literal blueprint for a political community, they easily turn into an instrument for excluding whatever does not fit the group's "natural Umwelt."