MORE INFO Causation, Information, Identity, and Becoming Philosophical consequences of Cosmic-Time Generative Presentism, a signal-based epistemology, and the world rules of a literary fiction work ========================================================================= =========================== OVERVIEW This document draws out the philosophical consequences that follow when three bodies of work are read together. The first is Cosmic-Time Generative Presentism (CTGP), an ontology of spacetime in which only the present exists, each present state is generated by the lawful evolution of the preceding one, and the past survives only through its consequences. The second is A Signal-Based Epistemology, a framework holding that all access to reality is mediated by detectable signals and constructed through processes of signal generation, detection, and interpretation. The third is a literary fiction work whose fictional universe has world rules that turn questions about consciousness, identity, and justice into fixed features of the setting. The connecting theme is a set of distinctions that are easy to collapse and costly to confuse: reality versus descriptions of reality, causal influence versus surviving information, truth versus recoverability, causation versus prediction, and numerical identity versus informational similarity. Keeping these apart yields a picture of the world that is neither a prewritten script nor random improvisation. Two qualifications govern everything that follows. First, these are philosophical consequences, not empirical results. CTGP itself acknowledges that presentist and eternalist readings of the same physics are observationally equivalent, so its ontology cannot be confirmed by measurement at fixed physics; it remains empirically exposed only through its requirement that the fundamental laws be generable from the present state. Second, conclusions drawn from the literary fiction work concern a fictional world. They are useful as thought experiments, not as evidence about how actual persons or minds work. ========================================================================= =========================== PART I. Reality, Representation, and Knowledge ========================================================================= =========================== ---------------------------------------------------------------------------------------------------1. Reality and information about reality are different categories ---------------------------------------------------------------------------------------------------A record of something is not the thing itself. A photograph of yesterday is not yesterday, a memory of an event is not the event, and a spacetime diagram containing an event is not the event occurring. CTGP builds this distinction into its formalism: its generated domain M(σ) is a formal
representation of the present world’s history, laid out as if earlier stages coexisted so that ordinary tensed reasoning can be applied, and not a collection of past states that continue to exist alongside the present. The signal-based epistemology makes the parallel point about knowledge: the past is reconstructed from present signals rather than directly observed. The general principle is that a description can be structurally faithful without being ontologically identical to what it describes. A map can accurately describe a city without containing the city, and a mathematical model of a physical system is a formal structure that can correspond to physical structure without being a second physical system sitting beside it. Three things must therefore be kept distinct: referent ≠ representation ≠ instantiation They can correspond without collapsing into one another. ---------------------------------------------------------------------------------------------------2. Information is relational ---------------------------------------------------------------------------------------------------Consider a rock that is photographed. There is the rock; the electromagnetic interaction that produces the image; the physical image; the information the image encodes; the observer’s interpretation of that information; and the proposition the observer finally forms. Calling all six “the information” blurs fundamentally different things. Information is better understood as a relation between a physical state and what that state makes distinguishable or representable. This is why the same information can have many physical instantiations: the word “HELLO” can exist as ink, voltages, sound waves, magnetic domains, pixels, or neural activity without being identical to any one of them. It also explains a useful asymmetry. Destroying one representation of a piece of information does not destroy the information, but destroying every physically available encoding may make it permanently inaccessible. Truth, representation, and accessibility are three separate matters. ---------------------------------------------------------------------------------------------------3. Knowing is not the same as having reality ---------------------------------------------------------------------------------------------------The signal-based epistemology replaces the picture “thing → knowledge” with a mediated chain: thing → signal → detection → interpretation → knowledge An observer does not simply possess reality. It receives some physically available information about reality and constructs an understanding from it. Ignorance is therefore not necessarily a defect of intelligence; sometimes reality itself imposes an information boundary. The framework identifies logical, physical, and computational limits on knowledge, together with limits of detection and interpretation, and it treats confirmation as a necessary condition for knowledge while recognizing intrinsic limits on what can be verified. Two principles follow, and holding them together prevents a large class of errors: • A fact can exist without there being any possible observer capable of knowing it.
• A highly confident belief can exist without the corresponding fact being true. ---------------------------------------------------------------------------------------------------4. Epistemic limits do not imply ontological vagueness ---------------------------------------------------------------------------------------------------Suppose an event occurs and leaves no surviving detectable trace. Two very different claims are then available: “We do not know whether X happened,” and “There is no fact of the matter about whether X happened.” The signal-based framework supports keeping these apart, because it ties knowledge to signals, detection, and inference while allowing that some truths remain permanently inaccessible. The boundary of knowledge is not necessarily the boundary of reality. This safeguard cuts in both directions. It blocks the inference “I cannot detect X, therefore X does not exist,” and it equally blocks “X could exist, therefore I am justified in believing X exists.” It also shows that ignorance comes in kinds, not merely degrees. Three epistemic conditions should be distinguished: • Known: sufficient accessible evidence exists. • Currently unknown: the evidence might become available. • Structurally unknowable: the necessary information can never reach the relevant observer or system. A person who does not know something because they have not looked is in a different condition from a person who cannot know it because no possible signal could reach them. Ignorance can be temporary, permanent, or principled. ---------------------------------------------------------------------------------------------------5. One reality, many information channels ---------------------------------------------------------------------------------------------------Different observers possess different information because they differ in location, sensors, history, computational capacity, causal access, and interpretive models. This does not require each observer to inhabit a different reality. Observers can be differently connected to the same reality. The resulting position is neither naive realism nor “everything is subjective”: it is one reality accessed through many information channels. Disagreement between observers can then be explained by differences in evidence, access, processing, or interpretation, without positing different underlying worlds. ---------------------------------------------------------------------------------------------------6. Coherence versus contact ---------------------------------------------------------------------------------------------------The signal-based framework distinguishes internal coherence from external contact. Coherence shows that a model hangs together; contact shows whether reality agrees with it. A perfectly coherent model can still be wrong, because coherence is a property of the model alone, while contact requires action and feedback from the world. The framework also characterizes good explanations as portable “loop-packages”: structures that another mind can run, that preserve invariants, and that support
prediction and intervention. On this view, knowing is not the possession of a complete picture of reality. It is the possession of a representation that participates successfully in reality-directed loops of inference, prediction, and action. Science is accordingly less like collecting photographs of the world and more like building increasingly effective interfaces with it. ---------------------------------------------------------------------------------------------------7. Reality is intelligible because it exceeds our models ---------------------------------------------------------------------------------------------------If reality were identical to whatever model an observer currently held, there would be no difference between discovering something and constructing it. Because reality exceeds every observer’s representation of it, reality can surprise the observer. That excess is what makes error, discovery, science, and learning possible. A related ladder shows how much is assumed at each step from contact to identity: causal access → information → representation → reconstruction → identity Each arrow requires further conditions. One can detect a star without describing it fully, describe it without reproducing it, and in principle reproduce the information in a brain without thereby reproducing the person whose brain it was. Many conceptual mistakes consist in silently treating one of these arrows as automatic. ========================================================================= =========================== PART II. Causation, Time, and Becoming ========================================================================= =========================== ---------------------------------------------------------------------------------------------------8. The present as the place where reality is generated ---------------------------------------------------------------------------------------------------CTGP holds that reality exists only at an advancing present boundary. Earlier states do not persist as independently real regions of spacetime; their specific physical organizations cease to exist as present realities, while their causal consequences continue to propagate through later structures. Present systems therefore inherit transformed physical continuities, causal records, and distributed consequences of prior states, not the earlier states themselves. The present is accordingly not merely “the point whose coordinate happens to be now.” It does ontological work: it is the generated edge of reality. A memory of yesterday exists now, but yesterday does not thereby become present again. Radiation arriving from a distant event exists now, but the distant configuration that emitted it does not. The present can contain causal inheritance from what no longer exists without containing the earlier state itself. The past and the future are therefore radically asymmetric. The past can leave effects without continuing to exist as past; the future can be causally possible without already existing as a
realized state. Under CTGP the future is not merely unknown but genuinely ungenerated. ---------------------------------------------------------------------------------------------------9. What makes truths about the past true ---------------------------------------------------------------------------------------------------Presentism faces a well-known question: if the past does not exist, what makes statements about it true? CTGP adopts a Lucretian answer (after Bigelow, 1996). The truthmaker for a past-tense truth is the present world itself, which instantiates primitive past-tensed properties of the form having been, at stage σ′, such that p. These properties belong to the present state as a whole and, once acquired, are retained at every later stage. Records play a different role. Records are categorical physical structures that carry evidence about the past, and they can be degraded or erased. They are evidence, not truthmakers. Losing a record therefore does not change what happened; it changes only what an embedded observer can come to know. CTGP states the cost of this position openly: past-tensed properties do not supervene on the present’s categorical physical configuration, since two present states could agree in every categorical respect while differing in their pasts. This is the familiar objection that Lucretian properties “cheat” (Sider). The distinction matters because it separates two questions that are easy to run together. Whether something happened is settled by the present world’s past-tensed profile. Whether anyone can establish that it happened depends on surviving records and on the signals available to an observer. ---------------------------------------------------------------------------------------------------10. Causal influence, surviving information, and recoverability ---------------------------------------------------------------------------------------------------Suppose A causes B, B causes C, and C causes D. By the time D exists, A may be entirely gone, and there may be no recoverable record from which any observer could reconstruct it. D can nevertheless be different because A occurred. Three notions must therefore be kept apart: causal influence ≠ surviving information ≠ recoverability Information loss does not amount to causal loss. Burn a letter and its text may become unrecoverable; but if someone read it first and made a decision because of it, the vanished information has already altered subsequent reality. Eventually even the reader’s memory may fade while the consequences of the decision continue to propagate. CTGP is consistent with this: it entails that the universe’s accessible causal archive is finite and dynamically evolving, shaped by record formation, thermodynamic degradation, and erasure, without implying that every past truth is stored in a record. In a metaphorical sense, reality retains the consequences of its past without containing a memory of it. “Retains” here means is causally downstream of, not stores a representation of. Reality does not represent; agents and other information-bearing systems do. The world can be truth-bearing, through its past-tensed properties, without being representation-bearing. ----------------------------------------------------------------------------------------------------
11. Everything causally active from the past is present now ---------------------------------------------------------------------------------------------------CTGP’s most exposed empirical commitment is generability: the fundamental laws must fix the transition from each present state to its successors (deterministically or probabilistically) without reference to future boundary data, final-state constraints, or global self-consistency conditions. CTGP adds that enlarging the state space to achieve this is legitimate only if the added variables are physically instantiated on the present hypersurface and have dynamics of their own. Combined with the doctrine of causal inheritance, generability yields a sharp principle: Whatever part of history can still affect the future must already be physically instantiated in the present. Otherwise a past that no longer exists would have to reach forward and do additional causal work. Two consequences follow. First, if two present states agreed in every physically instantiated respect, their futures would be governed identically by the laws, whatever their histories; history that left no physical trace in the present retains its truth, through past-tensed properties, but has no further causal leverage. Second, “instantiated in the present” does not mean “decodable by an observer.” Causal inheritance can be scrambled, distributed, thermodynamically degraded, or computationally unrecoverable. Something can be causally preserved while being informationally unrecoverable. ---------------------------------------------------------------------------------------------------12. Causality is lawful dependence, not foreknowledge ---------------------------------------------------------------------------------------------------A cause does not need to “know” its effect. A neuron does not represent the decision the organism will eventually make; a weather system does not contain a forecast of tomorrow’s weather; and under CTGP the present does not need to contain a pre-existing future in order to generate one. A process can produce a definite outcome without itself containing foreknowledge of that outcome. Causality is a relation of lawful dependence, not a relation of foreknowledge. Several distinctions follow. Predictability and causation are separable: something can be causally determined without being predictable by any observer, and something can be highly predictable without the predictor being its cause. Likewise, a determinate outcome is not the same as a pre-existing outcome. An event at t₂ may not exist at t₁, exist at t₂, and leave consequences at t₃, without anything at t₁, including the universe itself, possessing a completed representation of t₂. Three further concepts should not be conflated: prewritten, lawful, and predictable. Something can be lawful without being prewritten, lawful without being computationally predictable by an observer, and unpredictable without being causally unstructured. CTGP’s picture is precisely lawful generation without prewritten specification: order does not require predetermination, and novelty does not require causelessness. Coherence can also be retrospective without being prescient. A completed causal process can be reconstructed afterward as a continuous chain even though nothing within it possessed foreknowledge of how it would end.
---------------------------------------------------------------------------------------------------13. A complete causal history without a complete history book ---------------------------------------------------------------------------------------------------Suppose the history from A to E was entirely lawful, and afterward all evidence distinguishing A disappears. There can still be a fully definite answer to the question “Why is E this way?” while no observer at E, and perhaps no possible later observer, can reconstruct that answer. The signal-based epistemology explicitly allows such structural limits rather than treating all ignorance as a temporary shortfall of technology. Hence: • causal completeness does not entail epistemic completeness; • intelligibility in principle does not entail reconstructibility in principle; • reality can be lawful and determinate while being informationally lossy. A further obstacle remains even where information has not been destroyed. Any observer attempting to model the whole universe is itself part of the universe, so a complete model would have to include the modeler and its own modeling activity, which raises problems of resources and self-reference. The “view from nowhere” may therefore be structurally unavailable to any proper part of reality. Being part of reality is itself an epistemic condition. In a phrase, reality can be fully determinate while having thrown away the receipt. ========================================================================= =========================== PART III. Agency and the Representation of the Future ========================================================================= =========================== ---------------------------------------------------------------------------------------------------14. Agency does not require exemption from physics ---------------------------------------------------------------------------------------------------CTGP describes conscious agency, where it exists, as an emergent causal process within lawful physical dynamics rather than as an extra-physical selector of outcomes. This separates two ideas that are often run together: agency ≠ exemption from causality An agent can be physically constituted, causally influenced, internally structured, capable of deliberation, capable of representing alternatives, and capable of changing its behavior for reasons, and still be part of the causal chain. If an agent’s reasoning had no causal influence at all, calling it an agent would be difficult. Causal efficacy is part of what makes agency intelligible. A hurricane is caused by atmospheric conditions and is still a real process doing things; a decision can be caused by prior conditions while the person’s reasoning, memories, values, and actions are themselves links in the chain. “Caused” and “not really doing anything” are not synonyms. The signal-based framework makes a related point about creativity. The brain need not manufacture a finished idea somewhere “in advance” and then merely reveal it to consciousness; creative
construction can occur through ongoing interaction, recombination, feedback, and modification in the present. Causal systems can generate genuinely new configurations through their own dynamics. ---------------------------------------------------------------------------------------------------15. Memories and plans point in opposite causal directions ---------------------------------------------------------------------------------------------------Under CTGP, a memory and a plan are both present states about something that does not exist: a past that is gone and a future not yet generated. They relate to their targets in opposite ways. A memory is an effect of what it represents, since yesterday caused the memory of yesterday. A plan is a cause, or at least a candidate cause, of what it represents, since a plan for tomorrow is among the things that may generate tomorrow. A memory is true because of its causal ancestry. A plan becomes true, if it does, because of its causal descendants. This yields a non-mystical definition of agency: An agent is a causal system whose present representations of possible future states participate in determining which future state actually occurs. It also explains why prediction and intention are easily confused. A forecast and a plan can look identical on paper, but they relate to the world differently: • Prediction: present model → later correspondence. It succeeds by accurately describing what happens. • Intention: present model → causal action → later correspondence. It can succeed partly because it existed. A weather forecast predicts tomorrow; a human plan can help cause tomorrow. Nothing here involves retrocausation. It is not the future affecting the present; it is a present representation of a possible future affecting the present. ---------------------------------------------------------------------------------------------------16. Possibilities can matter causally without existing ---------------------------------------------------------------------------------------------------An intelligent system can represent alternatives: “I could do A; I could do B; if A, probably C; if B, probably D.” Neither imagined future needs to exist, but their present physical representations do, and comparing them changes what happens next. Physically existing alternative futures are therefore not required for alternatives to matter causally. possible future ≠ existing future, while a representation of a possible future is part of present causal reality An open future does not imply an informationally empty present. The present can be full of models of futures that do not exist, including plans, fears, simulations, forecasts, and contingency trees, and those present representations help determine which later state occurs. Agency is one way reality becomes causally responsive to possibilities without those possibilities being realities.
The present is thus an unusual junction. It contains causal inheritance from things that no longer exist and representations of things that do not yet exist, and only the former came from its referent: • Memory: past event → present representation. • Perception: present interaction → present representation. • Intention: present representation → action → future event. The same kind of thing, an information-bearing physical state, can play radically different causal roles depending on its position in the causal network. A photograph of a fire and a plan to start a fire may share descriptive content while doing opposite causal work. ========================================================================= =========================== PART IV. Personal Identity ========================================================================= =========================== ---------------------------------------------------------------------------------------------------17. Identity as the continuity of one’s own mind ---------------------------------------------------------------------------------------------------A natural criterion of personal identity is the continuity of the individual’s own mind. This is stronger and more precise than requiring the same body, atoms, or physical configuration, all of which change over a lifetime: molecules are replaced, appearance changes, neural configuration shifts from moment to moment, and memories are formed and lost. The relevant continuity is continuity of the mind as an ongoing process, which makes identity fundamentally diachronic rather than configurational. A snapshot of a person at 10:00 and another at 20:00 can be different physical configurations while belonging to the same continuing individual. “Mind” must mean more than the mental contents present at a given moment; otherwise sleep, anesthesia, unconsciousness, or memory loss would seem to create a new person. A more robust formulation is: Personal identity consists in the continuity of one’s own mind as an ongoing causal and psychological process, rather than in the persistence of any particular material configuration. Memory is a central component of that continuity because it carries much of a person’s accumulated history: experiences, relationships, knowledge, commitments, preferences, beliefs, decisions, and self-understanding. Memory is nonetheless not everything. A person can temporarily lack access to memories without becoming numerically different, and losing a memory does not make the remembered event cease to have happened or cease to have been part of that person’s history. What changes is present access to part of that history. The view therefore has three interconnected layers: • Mind continuity: the continuing individual mental process. • Memory continuity: preservation of, and access to, much of the individual’s accumulated history. • Causal continuity: the actual chain connecting earlier states of that mind to later ones.
---------------------------------------------------------------------------------------------------18. Identity under presentism ---------------------------------------------------------------------------------------------------Under CTGP only the present exists, so the claim “I am the same person I was ten years ago” relates something that exists (the present person) to something that does not (the earlier person). The same resources that answer the general question about past truths answer this one. That the present person was the earlier person is grounded in the present world’s past-tensed properties; the person is the present stage of a process whose history is also physically written into it now, as memory, neural structure, habits, dispositions, and commitments. Memory is evidence of this continuity, not what creates it. A present brain is not merely a container of information about its past; it is one of the physical consequences produced by that past. The resulting self-description is not “I am the person who remembers being me” but rather “I am the presently existing continuation produced through the causal development of that earlier individual.” ---------------------------------------------------------------------------------------------------19. Three kinds of continuity ---------------------------------------------------------------------------------------------------Three different continuities are easily run together: • Physical continuity: a physical system continuously develops into its next state. • Informational continuity: information about previous states remains encoded. • Experiential continuity: successive conscious states belong to one stream of experience. These can come apart. A hard drive can preserve informational continuity without experiential continuity; a sleeping person can have reduced conscious activity while preserving physical and informational continuity; and a perfect duplicate could share information and conscious organization while still raising the question of numerical identity. CTGP’s extension to consciousness treats causal continuity as one necessary condition for qualia-capable processes, while explicitly not claiming to solve the hard problem of consciousness. In ordinary life the three continuities coincide, which is why their distinctness is rarely noticed: persistence of organization ≠ persistence of information ≠ persistence of experience ---------------------------------------------------------------------------------------------------20. Duplication: same information is not the same individual ---------------------------------------------------------------------------------------------------Imagine a technology that produces a second human with the same genome, brain structure, synaptic strengths, relevant molecular states, memories, and personality. The duplicate wakes sincerely believing “I am me, and I remember everything that happened.” There are now two physically distinct causal continuations. A copied memory can preserve information about someone’s history without transferring that person’s numerical identity: same information ≠ same history ≠ same individual
A history can be copied without the historical individual being copied. More precisely, a person’s present state can be reproduced without the history that produced it being reproduced as the same history. The duplicate is not thereby “fake.” It would be a fully real conscious individual whose present state happens to encode another person’s history. Care is needed about why the copy differs, because the copy’s memories are not causally disconnected from the original events. The duplicate’s causal chain runs past event → original brain → scan → construction → duplicate’s memory. Both chains are causal and both reach back to the event; what differs is the route. One stays inside a continuously living organism; the other passes through measurement, encoding, and reconstruction. Causal ancestry alone therefore does not settle identity. A child is causally descended from a parent without being the parent, and a duplicate causally descended from a brain state is not, by that fact alone, the person whose brain it was. Causal dependence explains why something exists and how it arose; it does not by itself say whether the result is the same thing as its cause. An identity criterion must specify which kinds of causal pathway constitute continuation of an individual rather than production of a new one. ---------------------------------------------------------------------------------------------------21. Branching shows that psychological continuity is not enough ---------------------------------------------------------------------------------------------------Suppose one person becomes two successors, each with the same memories, personality, and causal ancestry up to the branching point. If psychological continuity were sufficient for identity, each successor would be the original. But numerical identity is transitive: if A = B and A = C, then B = C, and B and C are plainly two people. Therefore whatever relation preserves personal identity cannot be unrestricted psychological continuity. This is the fission problem familiar from Derek Parfit’s work, and it shows something structural: a relation can preserve everything that matters psychologically while failing to preserve numerical identity. The literary fiction work confronts this directly. In its fictional universe, a single continuing existence can transition between different forms without being duplicated; non-duplication is a world rule. That rule does real metaphysical work. It answers a question that psychological continuity alone leaves open, namely what happens when continuity branches. In the actual world nothing in known physics forbids branching in principle, so a real-world continuity view needs an explicit non-branching condition or an alternative criterion. Presentism sharpens the problem in an instructive way. After a split, both successors carry identical records of the pre-split history, and records can be copied. Under CTGP the fact of which successor walked out of the scanner and which out of the printer is still grounded, because it belongs to the present world’s past-tensed profile. What can be lost is access: if every distinguishing record is duplicated or erased, the fact may become unrecoverable. The duplication case is thus a clean example of a fact that exists without being accessible to the observers it most concerns. ---------------------------------------------------------------------------------------------------22. Transformation versus reconstruction ---------------------------------------------------------------------------------------------------Continuity of activity and continuity of identity are not the same thing. Temporary inactivity is
not necessarily discontinuity: during sleep, general anesthesia, or the deep hypothermic circulatory arrest used in some surgery, during which the brain’s electrical activity can fall silent, the brain’s organized physical structure remains intact, and later activity is causally continuous with earlier activity through that persisting structure. “Uninterrupted electrical activity” therefore cannot be the criterion. Ordinary biological replacement preserves an ongoing causal organization: the existing organization participates in determining how its own components are replaced, and at no stage does the person’s complete state exist merely as information outside the person. Scan-and-rebuild procedures differ in kind, because they insert a representation as an intermediate step. The original is measured, its state is encoded, and another system is built from the encoding. If City A were converted into a map and City B were then built from the map, no one would say that City A had traveled to B; something informationally derived from A produced B. The same applies to persons: the information required to reconstruct someone can survive without the individual whose information it is. Past → present through causal continuity: transformation. Past → representation → new instantiation: reconstruction. One candidate criterion is therefore: Personal identity consists in the uninterrupted causal inheritance of an embodied organization, rather than in reconstruction from a representation. Applied consistently, it yields the following verdicts: • Sleep, general anesthesia, and temporary cessation of detectable brain activity with structure intact: continuity. • Gradual biological replacement incorporated into the existing organization: continuity. • Gradual synthetic replacement incorporated in the same way: plausibly continuity, for the same reason. • Scan, destruction of the original, and reconstruction elsewhere: discontinuity, meaning the death of the original and the creation of a new person. Many people find this conclusion hard to accept, and it is the crux of Parfit’s teletransporter case. • Scan and reconstruction while the original survives: two individuals, not one becoming the other. • A perfect copy made from stored information: a new individual, however psychologically identical. • The Ship of Theseus repaired plank by plank: plausibly the same ship, since the existing organization continuously transforms rather than being rebuilt from a blueprint. The criterion is not without difficulty. Consider neurons replaced one at a time by functional equivalents until none of the originals remains. On a continuity reading, each replacement is incorporated into an already existing organization. On a “micro-reconstruction” reading, each replacement destroys one component and creates a successor from a description of it. Nothing in the physical process announces which reading is correct. Between gradual molecular turnover and whole-brain scan-and-rebuild lies a spectrum, and candidate dividing features include locality, temporal continuity, preservation of causal organization, the absence of an informational bottleneck, the absence of branching, or some combination. The framework has not established which of these is decisive; what it has done is locate the precise unresolved variable. Whatever criterion is chosen will settle the teleporter, the printer, gradual replacement, mind uploading, and the Ship of Theseus at once.
---------------------------------------------------------------------------------------------------23. Is the criterion discovered or chosen? ---------------------------------------------------------------------------------------------------Ordinarily, “we do not know whether X” means that there is a determinate fact not yet discovered. With concepts such as numerical identity, it is possible instead that several coherent criteria give different answers, and that no further physical measurement could decide between them, because the measurement does not determine which criterion should govern the term. The 2006 decision of the International Astronomical Union that reclassified Pluto as a dwarf planet illustrates the structure, though imperfectly, since “planet” is a classificatory term while personal identity carries great metaphysical and practical weight. Physics may one day tell us with great precision that process X occurred. That does not by itself tell us that X’s output is numerically identical to its input. The first is an empirical question; the second concerns the identity conditions we apply to physical processes. CTGP can say that a present state causally arose from an earlier one; it does not follow that the present entity is numerically identical to the earlier entity. That requires a theory of persistence. The best summary is therefore: Personal identity is not preserved merely by preserving information. It is preserved, if at all, by the kind of causal continuity through which one presently existing individual develops into its next state. A representation can preserve everything needed to describe an individual without becoming that individual. Whether reality uniquely dictates that criterion, or whether it is the convention that best captures the distinctions that matter, remains an open question. ========================================================================= =========================== PART V. Human Duplication as a Future Technology ========================================================================= =========================== ---------------------------------------------------------------------------------------------------24. Clones and duplicates ---------------------------------------------------------------------------------------------------A biological clone is only a genetic copy. It begins as an embryo and is born as a baby with no memories, much like an identical twin born later. Mammalian cloning has been demonstrated since the birth of Dolly the sheep in 1996, and macaque monkeys were cloned in 2018, but human reproductive cloning is not an established technology and carries serious safety and ethical problems. A full physical and mental duplicate, with the original’s memories and personality, is a far harder case. ---------------------------------------------------------------------------------------------------25. Why a full duplicate is far off ---------------------------------------------------------------------------------------------------The human brain contains roughly 86 billion neurons and on the order of 100 trillion synapses. A
duplicate would require more than the wiring diagram: it would need the strengths of connections and the molecular states that encode memory. The complete wiring diagram of an adult fruit-fly brain, about 140,000 neurons and some 50 million synaptic connections, was published only in 2024, after years of work by a large collaboration. Current nanoscale mapping methods are also destructive: they require fixing and slicing the tissue, so the original could not survive being read with today’s techniques. A 2025 survey of 312 neuroscientists (Zeleznikow-Johnston, Kendziorra, and McKenzie, published in PLOS ONE) found that 70.5% agreed that long-term memories are primarily maintained by neuronal connectivity patterns and synaptic strengths, but there was no consensus about which specific neurophysiological features or scales are critical. Respondents’ median estimate for when human whole-brain emulation might first be achieved was around 2125. That figure records expert opinion, not a scientific forecast. ---------------------------------------------------------------------------------------------------26. Degrees of plausibility ---------------------------------------------------------------------------------------------------Different levels of “copying a person” differ greatly in plausibility: Level of copying
| Plausible outside | Current status | fiction? | -------------------------------+--------------------------+----------------------------------------Genetically near-identical | Yes, in principle | Mammalian and primate cloning have been human | | demonstrated; human reproductive cloning | | is not an established technology and | | faces major safety and ethical barriers. -------------------------------+--------------------------+----------------------------------------Human with substantially | Plausibly | Genetic engineering, tissue engineering, engineered biological traits | | and prosthetics are active research | | fields. -------------------------------+--------------------------+----------------------------------------Copy of a person’s brain | Possibly | Whole-brain mapping of a human at the structure | | necessary resolution is far beyond | | current capability. -------------------------------+--------------------------+----------------------------------------Memories and personality | Unknown; not obviously | It is not yet known what physical reproduced in another brain | forbidden by known | information suffices to reconstruct | physics | long-term memories. -------------------------------+--------------------------+----------------------------------------Whole-brain emulation | A serious but highly | Studied by researchers; not achieved for | speculative hypothesis | any animal’s complete brain in the full | | sense, let alone a human’s. -------------------------------+--------------------------+----------------------------------------Exact instantaneous physical | Not known to be | Measurement and reconstruction at that state, including quantum state | achievable | level would be extraordinarily demanding | | and may be limited by quantum mechanics. -------------------------------+--------------------------+----------------------------------------The original person’s | Not a testable | Partly a metaphysical question about
numerical identity
|
| technological concept | identity rather than an engineering | specification.
If a person were scanned and a physically and psychologically indistinguishable second person produced, the two would be approximately identical at the moment of reconstruction (A₀ ≈ B₀) but would diverge immediately (A₁ ≠ B₁), because they are two separate causal processes. Successful copying would therefore not settle whether the copy is numerically the same person. The engineering question asks whether the relevant physical organization can be reproduced. The identity question asks whether reproducing that organization continues the original individual or produces a new one carrying the original’s information. Science could answer the first very well while leaving the second philosophical. ---------------------------------------------------------------------------------------------------27. What would need to be copied ---------------------------------------------------------------------------------------------------A functional duplicate would probably not require copying every electromagnetic detail. Reproducing someone’s face does not require reproducing the photons that bounced off it yesterday, and reproducing someone’s cognitive organization presumably does not require reproducing the radiation their body emitted at a particular instant. The target is the physical organization causally necessary for the relevant biological and cognitive processes, which is far smaller than every field, photon, thermal fluctuation, atomic position, and quantum state associated with the person. The crucial unknown is which information actually constitutes the functional state of a human brain, and that is not yet fully understood. Brain–computer interfaces already decode some neural activity to control external devices, but they are very far from extracting and reconstructing a whole mind. ---------------------------------------------------------------------------------------------------28. The unaware duplicate ---------------------------------------------------------------------------------------------------From the inside, a perfect duplicate’s evidence would be identical to the original’s: the same memories and the same sense of having lived that life. No internal signal could reveal which one is the copy. The fact would still exist, but it would be knowable only through external records, such as who left the printer and when. Perfect duplication would pull apart two things that ordinarily come together so tightly that they never need distinguishing: “I remember X” and “I personally took part in X.” ---------------------------------------------------------------------------------------------------29. Social and legal consequences ---------------------------------------------------------------------------------------------------If duplication ever became possible, it would raise immediate questions: who keeps the name, home, accounts, and marriage; whether a duplicate is responsible for acts the original committed before the duplicate existed; and whether a person may be copied without consent, or from old scan data. Both parties might sincerely say “that is my house,” because both have identical memories in which it is. The cleanest answer is not to force one numerical identity onto two people. The duplicate can instead be recognized as a newly existing individual whose psychological state contains another
individual’s autobiographical information. Whatever the legal details, the duplicate would be a full person in their own right, not a lesser one for having begun later. Society would need rules for property, marriage, contracts, criminal responsibility, employment, citizenship, family relationships, and identification. ---------------------------------------------------------------------------------------------------30. A test case without persistent memory ---------------------------------------------------------------------------------------------------Many current AI language models illustrate the framework from an unusual angle. Such a system typically carries no memory from one session to the next unless it is supplied with stored records. Text produced by an earlier session is available to a later one only as a record, much as radiation from a distant event is available to an astronomer. By the mind-continuity criterion, the session that wrote a passage and a later session that reads it share records, not a continuing mind. When the later session finds the passage convincing, it is not remembering having reasoned it out; it is reasoning it out again from evidence, which is exactly the thing → signal → detection → interpretation → knowledge chain of the signal-based epistemology. Such a system is a clean case of an entity whose past exists for it only as present records. ========================================================================= =========================== PART VI. Parts and Wholes: Being in the Universe Is Not Being the Universe ========================================================================= =========================== ---------------------------------------------------------------------------------------------------31. Constituents are not the whole ---------------------------------------------------------------------------------------------------The relation “is part of” must be kept separate from “is identical to.” A teapot in a kitchen occupies part of the house, is warmed by its air, filled from its plumbing, lit by its lamps, and moved around within it. It is entirely inside the house, and it is not the house. There is no contradiction in asserting both. Likewise, persons are entirely within the universe, composed of its matter and energy, continuously interacting with it, and unable to step outside it, and they are not the universe. Composition does not erase boundaries. Organization is nested: universe, galaxy, planetary system, planet, ecosystem, organism, organ, cell, molecule, atom. That every lower level is part of the higher ones does not make the levels identical. A neuron is part of a brain, a brain is part of a person, and a person is part of the universe, yet neuron ≠ brain ≠ person ≠ universe. The analogy is strongest if the teapot is imagined forming inside the house from the house’s own clay, water, and heat. Even then it would not be the house. That matches the human case: people were not made outside the universe and inserted into it; they arose from processes within it. Originating within a system does not make a subsystem identical to the system. ---------------------------------------------------------------------------------------------------32. Wholes do not inherit every property of their parts ----------------------------------------------------------------------------------------------------
A teapot can be hot without the house being a teapot, and a person can be conscious, hungry, remembering, or deciding without the universe as a whole having those experiences, memories, or decisions. Those properties belong to the particular organized system that instantiates them. “We are the universe experiencing itself” can work as poetry, but as a literal metaphysical claim it is much weaker. The precise statement is that persons are portions of the universe organized in ways that permit experience. The universe need not be an experiencing agent for some of its constituents to be experiencing agents. Causal participation is likewise bounded. Human actions genuinely affect later physical states, but human influence is local and limited; participating in the universe’s causal history is not controlling it. The observer is not outside reality looking in, but neither is the universe thereby an observer. When a person dies, the larger system continues while one organized process within it ends. A teapot is not the house merely because it is made of the house’s contents and exists entirely within it. Likewise, a person is not the universe merely because that person is made of the universe’s contents and exists entirely within it. The observer is a part of the universe observing other parts of the universe. ========================================================================= =========================== PART VII. Fiction as a Laboratory for Philosophy ========================================================================= =========================== ---------------------------------------------------------------------------------------------------33. Changing one assumption and following the consequences ---------------------------------------------------------------------------------------------------Worldbuilding of the kind found in the literary fiction work does what philosophers and theoretical scientists do: it changes one foundational assumption and follows the consequences. If consciousness cannot simply cease, rules for death are needed. If identity survives bodily transformation, duplication becomes a problem. If private thoughts cannot be punished, justice must operate on observable conduct. If magic exists, it needs constraints, or it destroys causal and narrative coherence. If artificial general intelligences genuinely experience existence, “artificial” does not settle questions of meaning or personhood. The literary fiction work turns these questions into permanent world rules rather than convenient plot devices, and its justice system is explicitly non-omniscient: judgments rest on observable evidence and human inference rather than supernatural certainty. ---------------------------------------------------------------------------------------------------34. Outcomes without foreknowledge ---------------------------------------------------------------------------------------------------A recurring creative principle is that an author does not need to know a story’s outcome for that outcome to be causally coherent. Characters act on what they know at the time; unexpected events occur; those events change later decisions; and the finished story can afterward be reconstructed as a causal chain without anyone inside it having had foreknowledge. That is an accurate description of
how complex causal systems behave. A work of fiction also changes its temporal structure when it is finished. While it is being written, its future is genuinely ungenerated, as in CTGP. Once complete, every chapter exists at once on the page, like a block universe. Each reader then experiences it in a moving present, one page at a time, with the ending unknown. The same world is a growing process for the author, a finished object on the shelf, and an unfolding present for the reader. This suggests that intuitions about which theory of time is correct may depend partly on whether one is inside a process or holding its record. ---------------------------------------------------------------------------------------------------35. External perturbation of the simulation ---------------------------------------------------------------------------------------------------The literary fiction work also specifies a mechanism of genuine unpredictability for its digital inhabitants. The simulation running on its host computers is continually perturbed from outside the digital environment by physical-world causes: maintenance performed on the computers by non-digital people, avatars controlled by living humans, and other interactions between the physical and digital sides. The resulting unpredictability is real randomness originating outside the simulation, not the output of a pseudo-random number generator and not a malfunction of the system itself. The structure is: external physical event → interaction with the digital system → digital consequence → an outcome that is unpredictable from within the digital environment ========================================================================= =========================== CONCLUSION ========================================================================= =========================== Read together, these frameworks support a single picture. Reality is not a warehouse of things and their descriptions. It is an ongoing causal process in which present states inherit the transformed consequences of earlier states, representations model those states without becoming them, and some processes, such as persons, may persist through particular kinds of causal continuity rather than through informational similarity alone. The past influences reality without needing to remain, because it acts through inherited present consequences. The future influences action without needing to exist, because it acts through present representations constructed by agents: past → present consequences → agents agents → present representations of possibilities → future consequences Observers stand at that intersection. They are not cameras pointed at the universe from outside; they are physical processes inside reality, receiving information from it, building models of it, acting on those models, and thereby becoming causes of its subsequent states. The observer is one of the things the universe is doing.
The resulting world is historically constrained, presently instantiated, informationally incomplete, and prospectively generative. It can contain objective facts, lawful causal structure, genuine temporal becoming, conscious experience, emergent novelty, imperfect observers, and permanently inaccessible information without contradiction; indeed, those limitations may be part of what makes observation, memory, discovery, and creativity possible. Reality does not need to contain a complete description of itself in order to be real, lawful, causal, and intelligible. Reality can exceed its descriptions, causality can precede prediction, and becoming can precede knowledge. None of this establishes, as an empirical theorem, that CTGP or any particular theory of personal identity is correct; CTGP is observationally underdetermined relative to eternalism at fixed physics, and the identity criteria above remain philosophical proposals. As a synthesis, however, it identifies the questions on which the remaining disagreements turn, above all: what kind of causal continuation, if any, constitutes the continued existence of the thing whose information has been copied?