numerical identity - Bryant McGill

# numerical identity **Entity class:** Concept or analytic term **Collections:** [[collections/Neurotech|Neurotech]] · [[collections/Consciousness Continuity|Consciousness Continuity]] ## Definition **Numerical identity** is the relation in which an entity is the very same individual across time, rather than a qualitatively similar copy, model, or descendant. In consciousness-transfer claims it is distinct from functional equivalence, behavioral resemblance, causal perturbation equivalence, autobiographical fidelity, and verified lineage. Those properties can be tested or documented without deciding whether a reconstruction is the same subject. The current corpus therefore treats numerical identity as an unresolved question while allowing a derived continuant to acquire standing as a person in its own right. ## Relationships  This entry is routed through [[collections/Neurotech|Neurotech]] and [[collections/Consciousness Continuity|Consciousness Continuity]]. Its source context is developed in [[articles/Mind Uploading and AI — The Host is Reusable and the Person is the Delta|Mind Uploading and AI — The Host is Reusable and the Person is the Delta]] and [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]]. Status-qualified source edges are preserved in the terminal Research Edges section. ### Key Relationships - The source corpus interprets the relationship this way: [[wiki/continuity engineering stack|continuity engineering stack]] is associated with **numerical identity**. ### Additional Documented Relationships - [[wiki/Consciousness Continuity Infrastructure|Consciousness Continuity Infrastructure]] is associated with **numerical identity**.  ## Related Work in the Corpus  - In [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]], **II. The host is reusable; the person is the delta** provides the narrative context for **numerical identity**: And the efficiency argument must not be permitted to erase the deepest boundary in the corpus. - In [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]], **XVI. The remaining miracle** provides the narrative context for **numerical identity**: The third is numerical identity, and it is not an engineering question at all.  ## Simple Reminders, Quotations, and Thoughts  > "Copies raise difficult questions about personal identity." > **— Anders Sandberg**, *Whole-brain emulation ethics discussions, wording candidate* *Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: Whole-brain emulation ethics discussions, wording candidate.* [[reminders/unverified/Copies Raise Difficult Questions About Personal Identity by Anders Sandberg|Copies Raise Difficult Questions About Personal Identity by Anders Sandberg]] > "Which statement seems more true: I have a brain. I am a brain." > **— Douglas Hofstadter**, *The Mind's I (1981)* *Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: The Mind's I (1981).* [[reminders/unverified/Do You Have a Brain—or Are You One by Douglas Hofstadter|Do You Have a Brain—or Are You One by Douglas Hofstadter]] > "Our brains are automatic, but we are free." > **— Michael Gazzaniga**, *Who's in Charge? (2011), thematic formulation candidate* *Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: Who's in Charge? (2011), thematic formulation candidate.* [[reminders/unverified/Our Brains Are Automatic by Michael Gazzaniga|Our Brains Are Automatic by Michael Gazzaniga]] > "The self is not an immutable entity lurking behind the windows of the eyes." > **— Anil Seth**, *Being You (2021), wording candidate* *Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: Being You (2021), wording candidate.* [[reminders/unverified/There Is No Fixed Self Behind the Eyes by Anil Seth|There Is No Fixed Self Behind the Eyes by Anil Seth]] > "We are collections of competent agents." > **— Michael Levin**, *Multiscale agency talks, wording candidate* *Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: Multiscale agency talks, wording candidate.* [[reminders/unverified/We Are Collections of Competent Agents by Michael Levin|We Are Collections of Competent Agents by Michael Levin]]  ## Research Edges  #### Consciousness mapping and transfer graph patch — 2026-09-10 **Collections:** [[collections/Neurotech|Neurotech]] · [[collections/Consciousness Continuity|Consciousness Continuity]] **Relationship source:** [[research/Consciousness Mapping and Transfer Ecosystem Relationship Graph - 2026-09-10|Consciousness Mapping and Transfer Ecosystem Relationship Graph — 2026-09-10]] **Related source articles:** [[articles/Technologies for Consciousness Mapping and Transfer|Technologies for Consciousness Mapping and Transfer]] · [[articles/The Architecture of Continuity and Emerging Neuroinformatics Standards|The Architecture of Continuity and Emerging Neuroinformatics Standards]] · [[articles/2026 Annual Report on Brain-Computer Interfaces|2026 Annual Report on Brain-Computer Interfaces]] · [[articles/The Organic-Synthetic Brain Atlas|The Organic-Synthetic Brain Atlas]] #### Incoming typed edges - **Edge 622 — [[wiki/Consciousness Continuity Infrastructure|continuity engineering stack]] `leaves_unresolved` → this entry** — **ARTICLE_ANALYTIC**; evidence `ARTICLE_NEW`. Core architecture of the rebuilt article; treat as synthesis unless separately verified.