What Is Posthumanism?

What Is Posthumanism?

Posthumanism is not one theory but a family of them, united by a single suspicion: that the category "the human" is not the stable, natural, universal foundation it pretends to be. For most of Western history, humanism treated "Man" as the measure of all things — rational, autonomous, distinct from animals and machines. Posthumanists argue this figure was always an ideal constructed by exclusion: it quietly left out women, people of color, the disabled, and everyone who did not fit the model, and it set up sharp boundaries — human versus animal, human versus machine — that never held up to scrutiny. Posthumanism does the work of questioning those boundaries: showing that humans are entangled with animals, environments, and technologies, and asking what thinking, ethics, and politics look like once "the human" loses its throne.

Historical Background

The word "posthuman" circulated in science fiction for decades, but the philosophical movement crystallized in the 1980s and 1990s out of poststructuralism, feminism, and science studies. The founding moment is usually dated to 1985, when Donna Haraway published "A Cyborg Manifesto": a cyborg, she argued, is "a cybernetic organism, a hybrid of machine and organism" — and we are all cyborgs already, tangled with our technologies. Haraway used the cyborg not as a transhumanist dream but as a political figure that refuses the clean categories of nature, culture, sex, and machine. In the following decades, scholars like N. Katherine Hayles ("How We Became Posthuman," 1999), Cary Wolfe, and Francesca Ferrando developed the position into a full philosophical school — critical posthumanism — distinct from and often opposed to the techno-optimism of transhumanism.

Key Concepts

• The critique of humanism. Posthumanism targets humanism's assumptions: human uniqueness, autonomy, mastery over nature, and the exclusion of all who don't fit the archetype.
• Cyborg theory. Haraway's framework: boundaries between human, animal, and machine are historically produced and politically loaded; hybridity is the norm, not the exception.
• Posthuman versus transhuman. Transhumanism wants to enhance the human and reach a "posthuman" future of greater capacities; posthumanism wants to deconstruct the concept of the human itself. The two are often confused.
• Entanglement and relationality. Humans are constituted by their relations with animals, ecosystems, and technologies — there is no self-contained human subject beneath the entanglements.
• The posthuman subject. A subject that is distributed, embodied, and multiple — not the isolated rational ego of the Enlightenment.
• Ethical implications. If boundaries are blurred, moral consideration must extend: to animals, to environments, and arguably to machines — while posthumanists remain wary of who defines the boundaries.

Contemporary Relevance

Posthumanism has become essential equipment for thinking about AI and biotechnology. When a large language model produces fluent text, when a neural implant merges with a brain, when a prosthetic becomes part of the body, the "human versus machine" boundary blurs in exactly the way posthumanists predicted. The movement offers tools for these debates: it questions who gets to define what counts as human, it warns against treating machines as either pure tools or honorary humans, and it challenges the assumptions hidden in AI ethics — that "human values" are a settled, singular thing. At the same time, posthumanism's critics accuse it of dissolving the very categories needed to defend human rights. Whether one embraces or resists the posthuman turn, the questions it raises are no longer optional.

Posthumanism's relevance to AI is not decorative. When a language model passes for human, when a chatbot becomes a companion, when a neural implant changes who someone is, the categories "human," "animal," and "machine" stop doing their old work. Posthumanists have spent forty years preparing the conceptual ground for exactly these moments — which is why AI ethics now routinely cites Haraway, Hayles, and their heirs.

The movement is also a corrective to a certain kind of AI debate. Both the techno-optimists who promise to upload our minds and the doomsayers who fear machine takeover assume "the human" is a fixed thing that machines will either replace or serve. Posthumanism asks who decided what "the human" is, and who benefits from the boundary — reminding us that every definition of humanity has a history and an agenda.

None of this requires abandoning the ethical commitments of humanism — dignity, equality, care. The posthumanist claim is narrower and harder to dismiss: those commitments cannot rest on a stable, given "human nature," because there is no such thing; they must be built, defended, and extended in a world where the boundaries are always being redrawn. The question is not whether we will become posthuman, but how we will live with the fact that we already are.

It is important to see what posthumanism is not. It is not the science-fiction vision of cyborg overlords, not the promise of uploading your mind, and not a celebration of technology for its own sake. Critical posthumanism is, if anything, a caution: it warns against fantasies of transcending the body and escaping history, and it insists on embodiment, vulnerability, and entanglement as the real conditions of life.

That is why the movement has become a resource for thinking about AI with some maturity. It refuses both the hype ("machines will think like us") and the panic ("machines will replace us"), because both depend on a clean human-machine boundary that posthumanism has already dissolved. The genuinely interesting questions — about care, power, identity, and meaning across the boundary — are exactly the ones it was built to ask.

Sources

• Haraway, Donna, "A Cyborg Manifesto: Science, Technology, and Socialist-Feminism in the Late Twentieth Century," Socialist Review 1985 — https://warwick.ac.uk/fac/arts/english/currentstudents/undergraduate/modules/fictionnownarrativemediaandtheoryinthe21stcentury/manifestly_haraway_----_a_cyborg_manifesto_science_technology_and_socialist-feminism_in_the_2014.pdf
• Ferrando, Francesca, "Philosophical Posthumanism" (Bloomsbury, 2019) — https://www.bloomsbury.com/us/philosophical-posthumanism-9781350059508/
• Hayles, N. Katherine, "How We Became Posthuman: Virtual Bodies in Cybernetics, Literature, and Informatics" (University of Chicago Press) — https://press.uchicago.edu/ucp/books/book/chicago/H/bo3769970.html

Related Topics

• What Is Human Enhancement? — the transhumanist route to the posthuman
• What Is the Meaning of Life in the Age of AI? — meaning after the human
• Philosophy: Posthumanism — the school in depth
• Philosophy: Transhumanism — the movement it is often confused with
• Thinker: Donna Haraway — the cyborg theorist