Virtual Immortality

Virtual immortality is the theory that the fullness of our first-person mental selves (our “I”) can be uploaded with first-person perfection to non-biological media, so that when our mortal bodies die and our brains dissolve, our mental selves will live on. I am all for virtual immortality and I hope it happens (rather soon, too). Alas, I don't think it will (not soon, anyway). I'd deem it almost impossible for centuries, if not millennia. Worse, virtual immortality could wind up being absolutely impossible, forbidden in principle.

This is not the received wisdom of optimo-techno-futurists, who believe that the exponential development of technology in general, and of AI in particular (including the complete digital duplication of human brains), will radically transform humanity through two revolutions. The first is the “singularity,” when AI will redesign itself recursively and progressively, such that it will become vastly more powerful than human intelligence. The second, they claim, will be virtual immortality.

Virtual immortality would mark a startling, transhuman world that optimo-techno-futurists envision as inevitable in the long run and perhaps just over the horizon in the mid run. They do not question whether their vision can be actualized; they only debate when it will occur, with estimates ranging from several decades to a century or so.

I'm skeptical. I think the complexity of the science is wildly unappreciated, and, more fundamentally, I challenge the philosophical foundation of the claim. Consciousness is the elephant in the room, though many refuse to see it. They assume, almost as an article of faith, that super-strong AI (post-singularity) will inevitably be conscious (perhaps ipso facto). They may be correct, but to make that judgment requires an analysis that is surely multifaceted and, I suspect, likely inconclusive.

Whatever consciousness may be, it determines whether virtual immortality in the strong sense of true first-person survival is even possible. That's why, here, to assess prospects of virtual immortality, I do so in the context of the Landscape's diverse categories of the explanations or theories of consciousness.

First, however, there are two other potential obstacles to virtual immortality. I consider them briefly. One is sheer complexity. What would it take to duplicate the human brain such that our first-person inner awareness, and all that it entails, would be not only indistinguishable from the original but actually identical to it?

Consider some (very) rough data for the human brain: about 86 billion neurons; 500 to 1,000 trillion synapses; about 40–130 billion glial cells (traditionally assumed limited to metabolic support for neurons, now shown also to participate in brain functions); up to 1,000 moments or “buckets” per second on every neuron for positioning action potentials (the electrical sparks of information in neurons); 50 billion proteins per neuron (some of which form memories); innumerable 3-dimensional structural forms for proteins and their geometric interactions; various extra-cellular molecules (some of which are involved in brain functions). The list goes on.

How much of all of this complexity is required for total virtual duplication such that the mental fullness of the original person can be said to exist? Who knows?

Granted, much of the brain is not needed for consciousness and its contents; much of the machinery of the brain is metabolic. The bodily control mechanisms, such as regulating breathing, heart rate and digestion would be of no value in non-biological substrates. On the other hand, several theories of consciousness suggest that bodily sense is needed for normal cognition (e.g., Embodied and Enactive Theories).

Take all the brain data together and consider all possible combinations and permutations that work to generate the more than 100 billion distinct human personalities who have ever lived (each of whom has distinct states from moment to moment over decades of life). I hesitate to estimate the number of specifications that would be required. How could all these be accessed non-invasively, in sufficient detail, in real time, and simultaneously? The technologies exceed my imagination. But in principle, they are possible.

A second potential deterrent to virtual immortality is quantum mechanics, the inherent indeterminacies that could make creating a perfect mental duplicate problematic or even impossible. After all, if quantum events (like radioactive decay) are in principle non-predictable, how then would it be possible to duplicate a brain perfectly?

But quantum indeterminacies exist everywhere, in bricks just as well as in brains, so its special applicability to brain function, and hence to virtual immortality, is questionable. The crux of the issue is at which level in the hierarchy of causation, if any, does quantum mechanics make necessary contributions to brain function and to consciousness? (11). Certainly, the vast majority of neuroscientists think quantum mechanics works only at bedrock levels of fundamental physics, way too low to play any special role at the higher levels where brains function and minds happen.

This means that while the sheer complexity of the brain would deter virtual immortality, and the indeterminacy of quantum mechanics might be an insurmountable obstacle to perfect duplication, the former would only delay its advent while the latter is probably not relevant. This leaves theories of consciousness—that same elephant in the room—which optimo-techno-futurists ignore as they plan their virtual afterlife.

This section on Virtual Immortality follows from the previous section on AI Consciousness. It is my conjecture that unless humanlike, first-person inner awareness can be created in AI-empowered non-biological intelligences, uploading one's neural patterns and pathways, however complete, could never preserve the original, first-person mental self (the private “I”) and virtual immortality would be impossible. To the extent that the case for AI consciousness can be made, the case for virtual immortality strengthens. To the extent that the case for AI consciousness is weak, the case for virtual immortality weakens. AI consciousness is a necessary but not sufficient condition for virtual immortality. In other words, virtual immortality requires the same basic conditions as does AI consciousness, but then must add (unknown) orders of magnitude of greater constraints and complexity, a hyper-advanced technological mastery that is conceivable in theory, but daunting in practice

What about well-known thought experiments where each neuron is replaced, one at a time, by silicon chips that are perfect replicators. Everyone would agree that replacing one neuron (of 86 billion) would not change phenomenal consciousness. What about replacing one billion neurons? Ten billion? All of them? Would consciousness gradually fade and wink out? Or disappear all at once (unlikely)? Or not change at all?

John Searle, who also used the silicon chip replacement thought experiment, thinks that “as the silicon is progressively implanted into your dwindling brain, you find that the area of your conscious experience is shrinking, but that this shows no effect on your external behavior” (Searle, 1992). David Chalmers, who uses “fading qualia” to probe consciousness, thinks silicon replacement would not change phenomenology (Chalmers, 1995a). Michael Tye, who offers four possibilities for what could happen to both phenomenology and belief, thinks that neither would change (Tye, 2019). Ned Block thinks phenomenology depends on the nature of our biological machinery (Block, 2023). I think theory of consciousness matters.

In my view, the silicon replacement thought experiment poses another hurdle for virtual immortality. Unless Chalmers and Tye are correct that there would be no change, virtual immortality would be impossible.

Philosopher of mind and AI Susan Schneider warns would-be mind uploaders that “If one opts for patternism, enhancements like uploading are not really ‘enhancements’; they can even result in death.” Patternism, she says, is based on the computational theory of mind (9.4), which explains “cognitive and perceptual capacities in terms of causal relationships between components, each of which can be described algorithmically.” One common metaphor is that “the mind is a software program: That is, the mind is the algorithm the brain implements.” Upload the software, you upload the mind? Not so fast. Personal identity, Schneider says, requires “spatiotemporal continuity,” such that any uploaded entity would not be your first-person self. It would be an “android,” she says, “an unwitting imposter.” (Schneider, 2019a, 2019b).

Computer scientist Jason Resch agrees with Schneider's point: a correct theory of personal identity is key to determining whether one can survive an upload. Resch argues that solving this question requires both a philosophy of mind and a philosophy of personal identity. He defends two such theories: functionalism in philosophy of mind and universalism in personal identity (Zuboff, 2025). Resch reasons that if one accepts both these theories, then survival through mind uploading is assured (Resch, 2026).

Philosopher Catherine Reason's No-Go Theorem against Materialsm/Supervenience implies an insurmountable barrier against virtual immortality. If conscious states "do not exist in the set of potential states {T} described by any theory T" (Reason and Shah, 2021), then a complete physical or computational upload could not reproduce self-certainty, casting doubt on substrate-independence as a route to virtual immortality.

As noted, virtual immortality is a large leap beyond AI consciousness, in that AI consciousness creates a new locus of consciousness, whereas virtual immortality must not only create a new locus of consciousness but also reproduce a prior locus of consciousness with exquisite perfection. This is why virtual immortality would require far more advanced technology, the acquisition of which could take centuries if not millennia or longer.

Whether virtual immortality is even possible has never changed, of course; always it has been determined or constrained by the unchanging, actual explanation or theory of phenomenal consciousness. We assess for each category.

Materialism Theories. If Materialism Theories explain consciousness entirely (without remainder), then our first-person mental self would be uploadable and virtual immortality would be attainable. The technology would take hundreds or thousands of years—not decades as optimo-techno-futurists expect—but, barring human-wide catastrophe, virtual immortality would happen. There is no in-principle prohibition.

If epiphenomenalism is true, then it is highly likely that virtual immortality would be attainable. The inert “foam” of consciousness should have little impact.

To the degree that Language affects the deep essence of consciousness would make Virtual Immortality more likely, given the exponential advances in AI language development—but it would still be only a first step.

Relational and Representational Theories, if true, could guide research and facilitate the technology for virtual immortality.

Non-Reductive Physicalism. If Non-Reductive Physicalism explains consciousness, then it is also highly likely that virtual immortality would be attainable. The causative power of mental states should not affect virtual immortality because a perfect duplication of the physical states would ipso facto produce a perfect duplication of the mental states. But if there were some strong emergence and/or top-down causation required, then those would also have to be duplicated in the upload.

Quantum & Dimensions Theories. If Quantum Theories are the mechanism of consciousness, then it is likely that virtual immortality would be attainable, because quantum mechanics is governed by highly predictable regularities, although the technology to do so would be more challenging. However, the indeterminacies, intrinsic probabilistics and strangeness of quantum physics add a degree of uncertainty that cannot be evaluated. The test, as with all potential causes of consciousness, is whether advanced technology can manipulate and control the cause of consciousness, and do so comprehensively and precisely and without meaningful error. The quantum nature of consciousness, if true, would introduce unpredictability and perhaps undermine perfect duplicability. For this reason, quantum theories, compared to other theories of consciousness, would have relatively less success in enabling virtual immortality than in generating AI consciousness (which is not to say it can do either).

Stuart Hameroff thinks it is possible that “your consciousness can be downloaded into some artificial medium as the singularity folks have been saying for years, but without any progress whatsoever.” Referencing his and Roger Penrose's Orch OR theory of quantum conscious (11.1), Hameroff says, “It could happen in an alternative medium that has the proper properties,” he said, “perhaps artificial nanotubes made of carbon fullerenes. [Creating consciousness in non-biological media] can be done as long as you have enough mass superposition to reach threshold in a reasonable time” (Hameroff et al., 2024).

Information Theories. If phenomenal consciousness requires an independent, non-reducible feature that may take the form of a radically new structure or organization of reality, perhaps a different dimension of reality—as IIT postulates—then virtual immortality could be possible, but it would be remain an open question whether our first-person mental self could be uploaded. As we do not understand this consciousness-causing structure, we could not now know whether it could be manipulated by technology, no matter how advanced. If this qualia space could be directed by activities in the brain, with predictable regularities, then virtual immortality would be more likely.

Whereas many neuroscientists assume that whole brain duplication can achieve, ultimately, virtual immortality, Tononi and Koch do not grant to a digital simulacrum the same consciousness we grant to a fellow human. According to IIT, they say, “this would not be justified, for the simple reason that the brain is real, but a simulation of a brain is virtual.” Consciousness is a fundamental property of certain physical systems, those that require having real cause–effect power, specifically the power of shaping the space of possible past and future states in a way that is maximally irreducible intrinsically.” Therefore, they conclude, “just like a computer simulation of a giant star will not bend space–time around the machine, a simulation of our conscious brain will not have consciousness” (Tononi and Koch, 2015). What would most likely happen, Tononi says, is, “you would create a perfect ‘zombie’—somebody who acts exactly like you, somebody whom other people would mistake for you, but you wouldn't be there” (Tononi, 2014c).

Panpsychisms. If Panpsychism is true and consciousness is an irreducible property of each and every elementary physical field and particle, then it would seem probable that our first-person mental self could be uploaded. There would be two reasons: (i) consciousness would be an intrinsic part of the fabric of reality, and (ii) there would be regularities in the way particles would need to be aggregated to produce consciousness—and if there are such regularities, then advanced technologies could learn to control them. But the question turns, again, on whether the micropsychic forces could be harnessed and manipulated by super-advanced technology, as can physical forces of fundamental physics (with varying degrees of difficulty and precision).

Monisms: As with AI consciousness, monism's single-stuff reality should enable virtual immortality—again, unless God or something like God (if it exists) were involved.

Dualisms. If Dualism is true and consciousness requires a radically separate, nonphysical substance not causally determined by the physical world, then it would seem impossible to upload our first-person mental self by duplicating the brain, because a necessary cause of our consciousness, this nonphysical component, would be absent. (An exception, again, would be Emergent Dualism [15.9], where unknown psychophysical laws would generate “souls” or nonphysical components “automatically.” But whether the same radically unknown psychophysical laws would work equally well for virtual consciousness as for brain-based consciousness is a further complexity.)

Idealisms. If consciousness is ultimate reality, then consciousness would exist of itself, primitive, without any physical prerequisites. But would the unique, comprehensive pattern of a complete physical brain (derived, in this case, from consciousness) favor a duplication of a specific segment of the cosmic consciousness (i.e., our unique first-person mental self)? It's not clear, in Idealism's case, whether uploading would make much difference (or much sense). But, again, like AI consciousness under Idealism, virtual immortality under Idealism would turn on whether hyper-technology, maximally advanced, could harness and manipulate Idealism's fundamental consciousness. I can argue both sides: on the one hand, we are already composed of the same consciousness, so duplication is facilitated; on the other hand, the probability of being able to manipulate fundamental consciousness does not feel high.

Anomalous and Altered States Theories.. As with AI consciousness, because Anomalous and Altered States theories of consciousness require “something” beyond, or in addition to, materialism, that “something” would be necessary but not sufficient to enable virtual immortality. However, given that almost every Anomalous and Altered States theory of consciousness already has ample (theoretical) resources to provide its own form or forms of immortality (supposedly), virtual immortality under Anomalous and Altered States theories would seem moot. After all, if you get the “real thing,” why worry about “virtual?”

To summarize, in pursuit of virtual immortality, here are my (tentative) conclusions for each category of theories of consciousness. Materialism Theories: Yes. Non-Reductive Physicalism: Likely. Quantum Theories: Probably (with uncertainty). Panpsychism: Probably. Monism: Likely (some). Dualism: No (mostly). Idealism: Likely. Anomalous and Altered States theories: Not needed.

Any theory, of course, would need to take on board all the brain-based complexities noted earlier, much underappreciated by optimo-techno-futurists.

In trying to distinguish among these alternative theories of consciousness, and thus assess the viability of virtual immortality, I am troubled by a simple observation. Assume that a perfect duplication of my brain does, in fact, generate my first-person consciousness—which is the minimum requirement for virtual immortality. This would mean that my first-person self and personal awareness could be uploaded to a new medium (non-biological or even, for that matter, a new biological body). But here's the problem: If “I” can be duplicated once, then I can be duplicated twice; and if twice, then an unlimited number of times.

What happens to my current first-person inner awareness? What happens to my “I”? Assume I do the duplication procedure and it works perfectly—say, five times. Where is my first-person inner awareness located? Where am I? Each of the five duplicates would state with indignant certainty that he is “Robert Kuhn,” and no one could dispute any of them. (For simplicity of the argument, physical appearances of the clones are neutralized.) Inhabiting my original body, I would also claim to be the real “me,” but I could not prove my priority. (David Brin's novel Kiln People is a thought experiment about “duplicates,” and personal identity [Brin, 2003].)

I'll frame the question more precisely. Compare my inner awareness from right before to right after the duplication process. Will I, the original, feel or sense differently? Here are four duplication scenarios, with their implications:

1. I do not sense any difference in my first-person awareness. This would mean that the five duplicates are like super-identical twins—they are independent conscious entities, such that each, after his creation, begins instantly to diverge from the others. This would imply that consciousness is the local expression or manifestation of a set of physical factors or patterns. (An alternative explanation would be that the duplicates are zombies, with no inner awareness—a charge, of course, they would angrily deny.)
2. My first-person awareness suddenly has six parts—my original and the five duplicates in different locations—and they all somehow merge or blur together into a single conscious frame, the six conscious entities fusing into a single composite (if not coherent) “picture.” In this way, the unified effect of my six conscious centers would be like the “binding problem” on steroids.^[1] This could mean that consciousness has some kind of overarching presence or a kind of supra-physical structure.
3. My personal first-person awareness shifts from one conscious entity to another, or fragments, or fractionates. These states are logically (if remotely) possible, but only, I think, if consciousness would be an imperfect, incomplete expression of evolution, devoid of deep grounding.
4. My personal first-person awareness disappears upon duplication; although each of the six (five plus original) claims to be the original and really believes it, in fact none is. (This, too, would make consciousness even more mysterious.)

For my money (or my life), I'd bet on Scenario 1. But if Scenario 1 is correct, then have “I,” the original “I,” achieved virtual immortality? No. I have a bunch of super-identical twins, an enlarged family, but no virtual immortality for “me.”

Suppose, after the duplicates are made, the original (me) is destroyed. What then? Almost certainly my first-person awareness would vanish, although each of the five duplicates would assert unabashedly that he is the real “Robert Kuhn” and would advise, perhaps smugly, not to fret over the deceased and discarded original.

There's a further implication of virtual immortality, and an odd one, relating to the possibility that super-strong AI, cosmos-colonizing robots could become conscious (see previous section). I can make the case that such galaxy-traveling, consciousness-bearing entities could include you—yes, you!—your first-person inner awareness exploring the cosmos virtually and (almost) forever. Here's the argument. If AI consciousness and virtual immortality are possible, then human first-person consciousness and personality can be uploaded (ultimately) into space probes and we ourselves can colonize the cosmos!

If virtual immortality is possible, I'd see no reason why we couldn't choose where we would like our virtual immortality to be housed, and if we choose a cosmos-colonizing robot, we could experience the galactic journeys through robotic senses (while at the same time enjoying our virtual world, especially during those eons of dead time traveling between star systems).

At some time in the (far) future, scientists will likely assure us that the technology is up and running. If I were around, would I believe the scientists and upload my consciousness? Moreover, entranced by what I assume will be AI-enhanced commercial advertisements, would I select a cosmos-colonizing robot as my medium of storage so that I could spend my virtual immortality touring the galaxy? I might, if only I'd be confident that a theory of consciousness that allows duplication is true and that the duplication procedure would not affect my first-person mental self one whit. (I sure wouldn't let them destroy the original, though the duplicates may call for it.)

So, while all the duplicates wouldn't feel like me (as I know me), I'd kind of enjoy sending “Robert Kuhn” out there exploring star systems galore.

There's more. If my consciousness is entirely physical and can be uploaded without degradation, then it can be uploaded without degradation to as many cosmos-colonizing robots as I'd like—or can afford. It gets crazy. Which makes me think there is something irreparably wrong with duplicates in specific and perhaps with virtual immortality in general.

Whether non-biological entities such as robots can be conscious, or not, presents us with two disjunctive possibilities, each with profound consequences. If robots can never be conscious, then there may be a greater moral imperative for human beings to colonize the cosmos. If robots can be conscious, then there may be less reason for humans, with our fragile bodies, to explore space—but your personal consciousness could be uploaded into cosmos-colonizing robots, probably into innumerable such galactic probes, and you yourself (or your mental clones) could colonize the cosmos.

My intuition, for what it’s worth, is that it’s all a pipe dream. I deem virtual immortality for my first-person inner awareness to be not possible as a practical matter (given any hyper-technology), and perhaps to be never possible in principle. Does this commit me to a form of dualism? I'm not comfortable with the pigeonhole. But confident in my conclusion, I am not.

While in the (far) future, we may find a way to convince ourselves that duplication really works, for me for now, I'm convinced of only this: Virtual immortality, like AI consciousness, must face the explanations and theories on the Landscape of Consciousness.

Footnote

[1]. The binding problem asks how our separate sense modalities, like sight and sound, come together such that our normal conscious experience feels singular and smooth, not built up from discrete, disparate elements.