Life after Death

This section is somewhat repetitive. The reason is not just because there is absence of real knowledge about survival beyond death, which is obvious (to some), but also because what follows from each explanation or theory of consciousness with respect to survival is reasonably clear (even if, in some cases, ambiguous).

Materialism Theories. Death of the brain and body is death of the person, irrevocable and permanent non-existence. The conventional-wisdom way to maintain post-mortem, first-person subjectivity under Materialism Theories would be virtual immortality via hyper-advanced technology (see the previous section). Another possibility comes from the four-dimensional block universe interpretation of fundamental physics (the fourth dimension being time). As Albert Einstein wrote to the family of his friend, Michele Besso, who had just died: “Now he has departed this strange world a little ahead of me. That signifies nothing. For us believing physicists, the distinction between past, present and future is only a stubbornly persistent illusion.”

Non-Reductive Physicalism. Whereas death under Materialism/physicalism means total extinction of mind and consciousness, under some forms of Non-Reductive Physicalism, with mind not reducible, it is possible that God (if there is a God), or something like God, could bring the person back to life, a radical process often labeled “resurrection” (10.3).

Quantum & Dimensions Theories. If consciousness comes about via specialized quantum processes, then, at least superficially, death is still death as it is in materialism. However, looking deeper, the strange, counterintuitive nature of quantum theory introduces the possibility of radically new levels or realms of existence, such as the many-worlds interpretation and alternative world histories selected by future events. It is still hard to imagine how any of this could provide first-person survival beyond death to my inner “I” that feels and senses now.

Information Theories. If phenomenal consciousness requires a radically new structure or organization of reality, perhaps a different dimension of reality, then what happens to these inscrutable things cannot be imagined and their potential permanence in some sense cannot be rejected. This does not mean that IIT espouses or even allows life after death. What it does is highlight the mystery and importance of consciousness, which leaves the door to survival perhaps a crack more open.

Panpsychisms. If all aspects of the world are infused with consciousness, then solving the combination problem—how myriad microscopic panpsychic elements coalesce to form a macroscopic consciousness—could enable novel ideas about what may happen when the process reverses, when the macroscopic consciousness dissolves with the dissolution of the brain. It seems a long-long shot to first-person survival, but for some kind of survival, not in principle impossible.

Monisms. Having one kind of fundamental stuff makes ultimate reality simpler, suggesting perhaps that some kinds of monism may facilitate survival. For example, John Polkinghorne's “dual-aspect monism” enables a resurrection.

Dualisms. With its nonphysical soul or spirit independent of the body being the “real you,” dualism provides the clearest mechanism for survival beyond death. As such, dualism dominates religious traditions and spiritual systems. In addition to resurrection (Abrahamic religions of Judaism, Christianity, Islam) and reincarnation (Eastern traditions, especially Hinduism and Buddhism), the vast majority of religious believers are sure that our individual soul or first-person awareness will, post-mortem, immediately be resident in some other realm. Popularity does not make truth, of course, but it is a data point. To reflect on dualism in reverse: If we knew counterfactually that survival beyond death was indeed a true fact of the world, we would likely infer that some kind of dualism is making it happen.

Idealisms. Idealism allows survival beyond death because if everything fundamentally is consciousness, and thus consciousness is the ground of all being, then a nexus between our individual consciousnesses and the ultimate or cosmic consciousness can be readily imagined. (Parsimony is nice but not dispositive.) Indeed, Eastern religions have survival as fundamental doctrine, usually in forms and systems of reincarnation. However, survival under Idealism usually does not mean survival of one's current first-person awareness, but rather some kind of consciousness expansion (Kastrup, 2016a, Kastrup, 2016b) or diffusion, like a person's one drop of personal consciousness absorbed back into the infinite ocean of cosmic consciousness from which it came. The issue of the afterlife in Indian philosophy is framed sharply by the question whether we will “eat sugar” (maintain our first-person identity) or “be sugar” (absorbed back into cosmic consciousness, lose our first-person identity) (Medhananda, 2023).

Anomalous and Altered States Theories. Survival beyond death of personal consciousness in some form is a prime feature of Anomalous and Altered States theories. Almost all categories of psi/paranormal (i.e., NDEs, OBEs, ESP, parapsychology, past lives) have “life after death”—if not as its central doctrine (which some do), then at least as a major aspect. Whether “communicating” with dead relatives in séances or “remembering” past lives via hypnosis, survival gets attention. In fact, survival is a main motivating reason why people are attracted to psi/paranormal phenomena in the first place.

Some orthogonal views.

Generic Subjective Continuity. Naturalistic conceptions of consciousness, personhood, and self, tied to a physicalist picture of consciousness dependent on the brain, would seem to make it impossible, even ludicrous, to sustain the hypothesis that one's particular personal consciousness survives the dissolution of the brain upon death. Nevertheless, naturalism philosopher Thomas Clark has proposed that at death we should anticipate not the onset of oblivion or nothingness, but the continuation of consciousness—however, not in the context of the person who dies. Such “generic subjective continuity” suggests that consciousness, albeit tied to specific physical instantiations, never finds itself absent (Clark, T., 1994). One might stretch to find resonances with aspects of some Eastern eschatologies. (That this may or may not be welcomed by those facing death—many of whom have the hope of first-person-continuity life after death, and some of whom may prefer the onset of oblivion, not the continuation of experience in other contexts—is way beyond the scope of this Landscape.)

Universalism. Universalism, according to philosopher Arnold Zuboff, is strictly neutral in its metaphysics — consistent with all materialisms and non-materialisms. It argues simply that all first-person experience is yours purely because only the general quality of first-person immediacy makes any experience yours — and for that reason alone, whatever is having any experience is you. The absence of integration of specific contents across all conscious beings hides from each your equal presence in all of them. The boundary of those specific contents only falsely seems like the boundary of you—as it would in the now-isolated experiential content of each hemisphere after hemispheric integration was cut in brain bisection. That you now exist is immensely powerful evidence against the usual view that you are only one conscious thing whose coming into existence depended on just one particular sperm cell making it first to the egg — not only in your own conception but in each of your ancestors’. In universalism, your existence requires only the existence of consciousness. And that means you exist despite the death of any one conscious thing, since you are equally present in all (Zuboff, personal communication).

Language and AI. Psychologist Stella Skopelitou offers that if we take consciousness literally as a word, then the self cannot be reduced to neural hardware, for no map of brain activity can literally decode or read individual noesis. What should endure is the configuration of language: a unique, ever-evolving syntax-of-selfhood through which one narrates experience, identity, and relationships. When people imagine living forever, what they wish to preserve is not raw sensory processing but the story of themselves: their name, memories, roles, relationships, and self-concept, the “I”. Immortality, then, would require the preservation and adaptive continuation of this linguistic structure in a responsive medium. One possibility is a personal AI archivist, trained to internalize and reproduce a person’s narrative style, reasoning, perspective, and relational patterns across contexts. Such an AI would learn from speech, writing, and self-descriptions, and might even integrate the voices of others who describe them. Freed from the body’s constraints, the continuity of self could persist as a dynamic, interactive presence, not as a frozen record, but as an evolving continuation of one’s way of being in the world. In this sense, a collective noesis may also be achievable.

To summarize, in pursuit of survival beyond death, here are my (tentative) conclusions for each category of theories of consciousness: Materialism: Almost impossible, with possible exceptions for virtual immortality and a four-dimensional block universe. Non-Reductive Physicalism: Unlikely, since all is still physical (possible religious exception: resurrection). Quantum Theories: Possible (even if so, it could be in formal, abstract ways of uncertain meaning). Information: possible. Panpsychisms: Unlikely, because while panpsychism imbues matter with micro-experiences, there is no enduring, unified macro-self. Monisms: Unlikely (possible exception: resurrection). Dualisms: certain, because a nonphysical substance preserves first-person consciousness. Idealisms: almost certain, because all is mental, even though cosmic consciousness blurs or blends first-person consciousness. Anomalous and Altered States theories: likley. Generic subjective continuity: No, but consciousness survives death in a generic, not a personal sense. Challenge: unlikely.

I [RLK] remain eagerly, though skeptically, open to speculation. Yet I cannot escape that teenage thought: “Should a being who can perceive eternity be denied it?”. But I won't fool myself.