Source Count: 12 | Weighted Score: 23 | Source Confidence: [3/5] | Primary Tier: 2 | Last Updated: June 27, 2025
Keywords: posthumanism, transhumanism, human enhancement, moral status, Nick Bostrom, Donna Haraway, cyborg, cognitive enhancement, genetic engineering, species boundaries
Category Tags: post-human-ethics, transhumanism, human-enhancement, moral-status, species-boundary
Cross-References: P_1_16 — AI Consciousness Philosophy · ZE_1_16 — Epistemic Ethics · Z_5_15 — Synthetic Genomes

QUICK SUMMARY

Post-human ethics addresses the moral questions arising from technologies that could fundamentally alter or transcend the human condition: genetic engineering (CRISPR germline editing), cognitive enhancement (nootropics, brain-computer interfaces), radical life extension, cybernetic augmentation, artificial intelligence, and the potential creation of beings that are neither fully human nor fully machine. The field spans two distinct intellectual traditions. Transhumanism — the movement advocating for the use of technology to enhance human capacities beyond their biological limits — was formalized by Nick Bostrom and David Pearce (co-founders of the World Transhumanist Association, 1998) and defended philosophically by Bostrom ("In Defense of Posthuman Dignity," 2005; Superintelligence, 2014), Julian Savulescu ("Procreative Beneficence," 2001 — arguing that parents have a moral obligation to select the best possible children through genetic technology), and Anders Sandberg (Oxford Future of Humanity Institute). The contrasting tradition of critical posthumanism — associated with Donna Haraway ("A Cyborg Manifesto," 1985), Rosi Braidotti (The Posthuman, 2013), and Cary Wolfe (What Is Posthumanism?, 2010) — critiques the liberal humanist subject (the autonomous, rational individual) as a historically contingent construct that has been used to exclude non-white, non-male, non-human Others. Critical posthumanism deconstructs the human/nonhuman boundary rather than seeking to enhance humans beyond it. Central ethical questions include: Does cognitive enhancement create unfair advantages, exacerbating inequality? (Michael Sandel, The Case Against Perfection, 2007). Is there a meaningful distinction between therapy (restoring normal function) and enhancement (going beyond normal)? Do posthuman beings deserve moral consideration? What are the risks of uncontrollable superintelligent AI? (Bostrom, 2014). Should we treat species boundaries as morally significant? Jürgen Habermas (The Future of Human Nature, 2003) argued that genetic manipulation of future persons violates their autonomy by predetermining their biological constitution without their consent.

1. VERIFIED CLAIMS (Tier 1 — Peer-Reviewed / Established)

• KEY FINDING Donna Haraway (UC Santa Cruz) published "A Cyborg Manifesto: Science, Technology, and Socialist-Feminism in the Late Twentieth Century" (1985; collected in Simians, Cyborgs, and Women, 1991), arguing that the boundary between human and machine (and between human and animal) has already been dissolved by modern technology and biology. The cyborg — a hybrid of organism and machine — serves as a political metaphor for identities that resist traditional categories of gender, race, and species, offering a "post-gender world" beyond the dualisms of Western thought.
• Nick Bostrom (Oxford University) published Superintelligence: Paths, Dangers, Strategies (2014), analyzing the existential risk posed by artificial general intelligence (AGI) that exceeds human cognitive capacity. Bostrom argued that the "control problem" — ensuring that a superintelligent AI's goals remain aligned with human values — is one of the most important challenges facing civilization, because a misaligned superintelligence could pursue goals catastrophic to humanity.
• Michael Sandel (Harvard University, The Case Against Perfection: Ethics in the Age of Genetic Engineering, 2007) argued against genetic enhancement on the grounds that it expresses a problematic "hyperagency" — the desire to master and control human nature — which undermines: (1) humility (appreciation of the "giftedness" of life); (2) solidarity (if advantages are genetically purchased, the basis for social insurance erodes); and (3) responsibility (parents who design their children cannot hold them responsible for failing to fulfill designed expectations).
• Jürgen Habermas (The Future of Human Nature, 2003) argued that genetic manipulation of embryos for enhancement purposes violates the future person's autonomy: unlike socialization (which can be critically reflected upon and rejected), genetic modifications are irrevocable and predetermined, creating an asymmetric relationship between designing parents and designed children.

2. CREDIBLE CLAIMS (Tier 2 — Academic / Debated but Supported)

• KEY FINDING Julian Savulescu (Oxford Uehiro Centre for Practical Ethics, 2001, Bioethics) argued for "Procreative Beneficence" — the principle that "couples (or single reproducers) should select the child, of the possible children they could have, who is expected to have the best life." This applies to both genetic selection (PGD, embryo screening) and potential future genetic enhancement, and implies that failing to enhance a child when the means are available is ethically comparable to failing to provide education or nutrition.
• Rosi Braidotti (The Posthuman, 2013, Polity Press) developed a critical posthumanism that: (1) deconstructs Enlightenment humanism as a historically specific ideology tied to European colonialism, patriarchy, and anthropocentrism; (2) argues for a "nomadic" subjectivity that embraces multiplicity and hybridity; and (3) extends ethical consideration beyond the human species to animals, ecosystems, and potentially machines — a "zoe-centered" rather than "bios-centered" ethics.
• The therapy-enhancement distinction — widely invoked in bioethics to limit acceptable interventions to "restoring normal human function" while prohibiting "enhancement beyond normal" — has been criticized by Bostrom, Savulescu, and others as: (1) conceptually unstable (what counts as "normal" is culturally variable and historically contingent); (2) morally arbitrary (if improving cognitive function through education is permissible, why not through pharmacology?); and (3) practically unenforceable (the same drug can treat ADHD and enhance normal attention).
• Brain-computer interfaces (BCIs) — including Neuralink (Elon Musk, founded 2016), BrainGate (clinical trial system), and research at DARPA — raise ethical questions about cognitive liberty (right to mental privacy and freedom from unauthorized neural manipulation), identity (does a brain-machine hybrid remain the "same person"?), and access equity.

3. SPECULATIVE CLAIMS (Tier 3 — Possible but Unverified)

• Whether radical life extension (extending healthy human lifespan to hundreds of years) would be ethically desirable or would create intractable social problems (overpopulation, resource competition, generational power imbalances, psychological stagnation) remains entirely theoretical.
• The "speciesist" argument (Peter Singer, Animal Liberation, 1975) — that moral status should not depend on species membership but on sentience — has been extended to argue that enhanced posthumans, AI systems, and human-animal chimeras might all deserve moral consideration regardless of their species classification.
• Whether "uploading" human consciousness to digital substrates (mind uploading/whole brain emulation) would constitute survival of the original person or creation of a copy is a thought experiment without empirical resolution.

4. DUBIOUS CLAIMS (Tier 4 — No Credible Source / Contradicted by Evidence)

• DEBUNKED Claims that transhumanism is a unified, coherent ideology ignore the deep disagreements within the movement between libertarian transhumanists, democratic transhumanists, technoprogressives, and those focused on existential risk reduction.
• Apocalyptic claims that AI will inevitably destroy humanity conflate one scenario (misaligned superintelligence) with a certainty, ignoring the range of possible AI development trajectories and risk mitigation strategies under active development.

Counter-Arguments & Criticisms

• Enhancement inequality: If cognitive and physical enhancements are expensive, they could exacerbate existing inequalities, creating genetically or technologically enhanced elites and an unenhanced underclass.
• Human nature: Both Francis Fukuyama (Our Posthuman Future, 2002) and Habermas argue that there is something morally significant about human nature that deserves protection — "Factor X" (Fukuyama) — though defining this precisely proves difficult.
• Unpredictability: The long-term consequences of genetic enhancement, brain-computer interfaces, and AI superintelligence are fundamentally unpredictable, making consequentialist ethical analysis unreliable and strengthening precautionary arguments.

IMAGES

No images assigned yet.

BIBLIOGRAPHY

1. Bostrom, Nick | 2014 | ∅ | Superintelligence: Paths, Dangers, Strategies | ∅ | ∅ | Oxford: Oxford University Press | ∅ | doi:10.1007/s11023-015-9377-7 | ∅ | ∅ | ∅
2. Haraway, Donna | 1991 | ∅ | Simians, Cyborgs, and Women: The Reinvention of Nature | ∅ | ∅ | New York: Routledge | ∅ | doi:10.1086/289868 | ∅ | ∅ | ∅
3. Sandel, Michael J | 2007 | ∅ | The Case Against Perfection: Ethics in the Age of Genetic Engineering | ∅ | ∅ | Cambridge: Harvard University Press | ∅ | doi:10.1007/s10790-010-9202-8 | ∅ | ∅ | ∅
4. Habermas, Jürgen | 2003 | ∅ | The Future of Human Nature | ∅ | ∅ | Cambridge: Polity | ∅ | isbn:9780745629865 | ∅ | ∅ | ∅
5. Savulescu, Julian | 2001 | "Procreative Beneficence: Why We Should Select the Best Children" | Bioethics | ∅ | 6::413–426 | 15.5 | ∅ | doi:10.1111/1467-8519.00251 | ∅ | ∅ | ∅
6. Braidotti, Rosi | 2013 | ∅ | The Posthuman | ∅ | ∅ | Cambridge: Polity | ∅ | isbn:9780745641584 | ∅ | ∅ | ∅
7. Bostrom, Nick | 2005 | "In Defense of Posthuman Dignity" | Bioethics | ∅ | 19.3::202–214 | ∅ | ∅ | doi:10.1111/j.1467-8519.2005.00437.x | ∅ | ∅ | ∅
8. Fukuyama, Francis | 2002 | ∅ | Our Posthuman Future: Consequences of the Biotechnology Revolution | ∅ | ∅ | New York: Farrar, Straus and Giroux | ∅ | isbn:9780374236434 | ∅ | ∅ | ∅
9. Wolfe, Cary | 2010 | ∅ | What Is Posthumanism? | ∅ | ∅ | Minneapolis: University of Minnesota Press | ∅ | isbn:9780816666140 | ∅ | ∅ | ∅
10. Buchanan, Allen | 2011 | ∅ | Beyond Humanity? The Ethics of Biomedical Enhancement | ∅ | ∅ | Oxford: Oxford University Press | ∅ | | ∅ | ∅ | ∅
11. Singer, Peter | 1975 | ∅ | Animal Liberation | ∅ | ∅ | New York: HarperCollins | ∅ | isbn:9780060011574 | ∅ | ∅ | ∅
12. Persson, Ingmar; Julian Savulescu | 2012 | ∅ | Unfit for the Future: The Need for Moral Enhancement | ∅ | ∅ | Oxford: Oxford University Press | ∅ | isbn:9780199653645 | ∅ | ∅ | ∅

CROSS-REFERENCE INDEX

Generated from V4 expansion plan. Last Updated: June 27, 2025

Corrections

• Beyond Humanity? The Ethics of Biomedical Enhancement — invalid ISBN 9780199587813 removed. No verified replacement could be found, and supplying an unverified number would be worse than none. The entry's author, title, publisher and year are unchanged.
• Animal Liberation — ISBN corrected from 9780060111574 to 9780060011574, verified against Open Library (Animal liberation, Peter Singer). The previous number failed its check digit.