Posthumanism

Overview

Posthumanism is a family of positions in philosophy, critical theory, and cultural studies that challenge the centrality, the uniqueness, and the fixity of the human. Where transhumanism seeks to enhance the human beyond its current limits, posthumanism questions the very framework in which "the human" is defined: the assumption that human beings constitute a natural kind with a fixed essence, sharply distinguished from animals, machines, and the rest of nature. The "post" in posthumanism marks not simply an after but a critique: the human as it has been conceived in Western thought — the autonomous, rational, self-possessed subject — is a historical construction, and it is passing.

Posthumanism draws on several sources. It inherits the antihumanism of twentieth-century continental philosophy — the critique, running from Nietzsche through Foucault and the poststructuralists, of the "human" as an ideological construct that has served to exclude and dominate. It draws on feminist and postcolonial theory, which have shown that the "universal human" of the tradition was in fact a particular figure — male, European, propertied, able-bodied — whose universality masked its exclusions. And it draws on the philosophy of technology and the life sciences, which have made the boundary between the human and the non-human — the organic and the machine, the natural and the artificial — increasingly difficult to draw.

Posthumanism is therefore not a single doctrine but a set of critical interventions. Its common thread is the refusal to take "the human" as a given: the human is made, not found, and the making is always in relation to what it excludes — the animal, the machine, the environment, the other.

Core Principles

The first principle of posthumanism is the critique of humanism. The humanist subject — rational, autonomous, self-transparent, master of nature — is a historical artifact, not a natural kind. Posthumanism shows how this figure was constructed and what it has been used to justify: the domination of nature, the exclusion of the non-Western and the non-male, the subordination of the animal and the machine. The critique does not reject human values such as freedom and dignity; it rejects the metaphysical picture in which they were grounded.

The second principle is the deconstruction of the species boundary. There is no sharp line between the human and the animal, or between the organic and the machine. Human beings are animals; human cognition is embodied and embedded; human existence is constitutively entangled with technology. The boundaries that posthumanism dissolves are the boundaries that made the human appear as a separate and superior kind.

The third principle is the cyborg as figure. Donna Haraway's cyborg — "a cybernetic organism, a hybrid of machine and organism" — is the emblematic posthuman figure: neither natural nor artificial, neither pure nor bounded, but a creature of the boundary itself. The cyborg is not a prediction but a way of thinking: it shows that the "human" has always been a hybrid, and that the future will be made of hybrids.

The fourth principle is the posthuman as ethical opening. If the human is not a fixed essence, then the question "what should we become?" is genuinely open, and the range of beings to whom we owe consideration expands: animals, machines, environments, future beings. Posthumanism is not merely a critique; it is an ethics of our entangled, co-constituted existence.

Key Thinkers

Donna Haraway is the central figure of posthumanism. Her "A Cyborg Manifesto" (1985) is the founding text of cyborg theory: the cyborg as a figure that escapes the binary structures of Western thought — nature/culture, organic/machine, self/other — and opens new possibilities of solidarity and self-understanding. Her later work on companion species and the "Chthulucene" extends the posthumanist project to the more-than-human world.

Rosi Braidotti gave posthumanism its most systematic philosophical articulation in The Posthuman (2013). Braidotti develops a "critical posthumanism" that rejects both the transhumanist dream of enhancing the autonomous subject and the antihumanist dismissal of subjectivity, proposing instead a posthuman subjectivity that is relational, embodied, and embedded — a subject constituted by its connections rather than its boundaries.

The antecedents of posthumanism include the antihumanism of the continental tradition — Nietzsche's critique of the "human" as an all-too-human invention, Foucault's announcement of the "death of man" — and the philosophy of technology, which has long argued that the human is constituted through its tools. Contemporary posthumanism also draws on feminist science studies, postcolonial theory, and environmental thought, which have all shown that the question of the human is inseparable from questions of power and exclusion.

Historical Development

Posthumanism emerged in the late twentieth century from the convergence of antihumanism, feminist theory, and the philosophy of technology. The structuralist and poststructuralist critique of the subject — the claim that the autonomous individual of humanism is an effect of language, power, and structure rather than their source — prepared the ground. Feminist philosophers showed that the universal subject of the tradition was gendered; postcolonial theorists showed that it was racialized; and the philosophy of technology showed that it was constituted by its instruments.

The publication of Haraway's "A Cyborg Manifesto" in 1985 marked the moment posthumanism became a movement. Haraway's cyborg was a figure for a feminism that refused the choice between nature and technology, and for a politics of coalition across the boundaries of the human. The manifesto became one of the most cited texts in the humanities and the founding document of cyborg studies.

In the 2000s and 2010s, posthumanism developed into a distinct field. Braidotti's The Posthuman gave it a systematic philosophical form; the growth of animal studies, environmental humanities, and critical AI studies extended its scope; and the debates between posthumanism and transhumanism — two positions that reject fixed human nature but draw opposite conclusions — became a defining controversy of contemporary philosophy.

Contemporary Relevance

Posthumanism is directly relevant to the most pressing questions of the technological age. In the ethics of AI, it challenges the framework that asks "can machines be conscious like us?" and asks instead how the boundaries between human and machine are drawn, who benefits from them, and what new entanglements of human and machine intelligence are emerging. In the ethics of biotechnology, it challenges the assumption that there is a natural human form that enhancement would violate. In environmental thought, it challenges the anthropocentrism that treats the human as the measure of all value.

The posthumanist critique of the subject also has political consequences: if the "universal human" was an exclusionary construction, then the task of politics is not to perfect the humanist subject but to build solidarities across the boundaries that humanism drew. The posthuman is not a prophecy of our replacement but an invitation to rethink what we are and what we owe each other — human and non-human alike.

Sources

The academic grounding for posthumanism is Rosi Braidotti's The Posthuman (Polity Press, 2013), the field's most systematic statement, together with the Stanford Encyclopedia of Philosophy's entries on Human Enhancement and Human Nature, which provide the philosophical context of the debates over human nature and its transformation.