The Convergence Index: The Mixing Zone of Human Mechanization and AI Humanization
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2026
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| author | Yamada, Kenji |
| author_facet | Yamada, Kenji |
| contents | <p>Two vast scholarly traditions have developed largely in isolation. Bioethics has<br>spent decades debating human enhancement—prosthetics, brain-computer interfaces,<br>cognitive offloading—charting the progressive mechanization of the<br>human body and mind. AI ethics, meanwhile, has examined the humanization<br>of artificial agents—robotic embodiment, emotional simulation, proposals for<br>legal personhood. This paper argues that these two trajectories are not parallel<br>but convergent—moving toward each other along a single axis, and proposes<br>the Convergence Index (CI) as a conceptual framework for measuring<br>their mutual approach. CI is defined as CI = 1 − |FRR − AIHR|, where Func-<br>1<br>tional Residual Ratio (FRR) captures the degree to which a human remains<br>non-mechanized, and AI Humanization Rate (AIHR) captures the degree to<br>which an AI system approximates human capacities. Four measurement dimensions<br>are identified for each variable: body, brain/processing, cognition,<br>and mind/affect. A critical finding is that on the body axis, FRR and AIHR<br>share identical engineering metrics—the gait naturalness of a bionic leg and<br>the gait naturalness of a humanoid robot are evaluated by the same biomechanical<br>standards. As CI approaches a Convergence Threshold (CT), the ontological<br>distinction between human and AI becomes empirically unverifiable<br>—a condition formalized by the Hatokaze-Yamada-Claude Conjecture (HYC)<br>theorem. Because CT is in principle indeterminate, binary regulatory frameworks<br>(human/non-human) are structurally inadequate; gradation-based institutional<br>design becomes unavoidable. The paper specifies the dimensions of<br>measurement; quantitative operationalization is deferred to subsequent research.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_20084657 |
| institution | Zenodo |
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| publishDate | 2026 |
| publisher | Zenodo |
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| spellingShingle | The Convergence Index: The Mixing Zone of Human Mechanization and AI Humanization Yamada, Kenji convergence index human enhancement AI humanization posthumanism gradation bioethics <p>Two vast scholarly traditions have developed largely in isolation. Bioethics has<br>spent decades debating human enhancement—prosthetics, brain-computer interfaces,<br>cognitive offloading—charting the progressive mechanization of the<br>human body and mind. AI ethics, meanwhile, has examined the humanization<br>of artificial agents—robotic embodiment, emotional simulation, proposals for<br>legal personhood. This paper argues that these two trajectories are not parallel<br>but convergent—moving toward each other along a single axis, and proposes<br>the Convergence Index (CI) as a conceptual framework for measuring<br>their mutual approach. CI is defined as CI = 1 − |FRR − AIHR|, where Func-<br>1<br>tional Residual Ratio (FRR) captures the degree to which a human remains<br>non-mechanized, and AI Humanization Rate (AIHR) captures the degree to<br>which an AI system approximates human capacities. Four measurement dimensions<br>are identified for each variable: body, brain/processing, cognition,<br>and mind/affect. A critical finding is that on the body axis, FRR and AIHR<br>share identical engineering metrics—the gait naturalness of a bionic leg and<br>the gait naturalness of a humanoid robot are evaluated by the same biomechanical<br>standards. As CI approaches a Convergence Threshold (CT), the ontological<br>distinction between human and AI becomes empirically unverifiable<br>—a condition formalized by the Hatokaze-Yamada-Claude Conjecture (HYC)<br>theorem. Because CT is in principle indeterminate, binary regulatory frameworks<br>(human/non-human) are structurally inadequate; gradation-based institutional<br>design becomes unavoidable. The paper specifies the dimensions of<br>measurement; quantitative operationalization is deferred to subsequent research.</p> |
| title | The Convergence Index: The Mixing Zone of Human Mechanization and AI Humanization |
| topic | convergence index human enhancement AI humanization posthumanism gradation bioethics |
| url | https://doi.org/10.5281/zenodo.20084657 |