Thusness · John Tan

The Logical Necessity of a Substrateless World · Chapter 8 · Part III

States of Awareness, Deep Sleep, and Death

The Fallacy of the 'Ontological Off-Switch'

Substantialist metaphysics treats states of non-ordinary or absent consciousness—such as dreamless sleep, general anaesthesia, coma, or biological death—as existential drop-offs into an 'absolute void'.

This binary view relies on a fundamental misconception: that awareness is an invariant, self-contained entity that is either 'turned on' (present) or 'turned off' (annihilated).

As Chapter 6 argued, absence is never absolute. A gap in conscious reporting or sensory perception is a change designated within a particular context and framework of description—itself, like the states it separates, ultimately empty.

Sleep and Anaesthesia: Quieter Configurations, Not Gaps

In dreamless sleep or under a general anaesthetic, ordinary perception largely recedes, the narrative of a self falls quiet, and nothing is remembered afterwards. The substantialist reads this as the mind switching off: a subject that was there, and then, for a while, was not. Read that way, every night is a small rehearsal of annihilation.

In a substrateless framework, however, deep sleep and anaesthesia are designated as quieter configurations of appearance, not as the destruction of anything.

Physiological, cellular, and environmental processes continue, conventionally described—not as a deeper layer persisting beneath awareness, but as other aspects of the same dependent appearance. What has changed is not the fundamental status of existence; a different configuration of appearance is designated, within the frameworks of physiology and of experience.

A Lived Example: Going Under

Anyone who has had a general anaesthetic knows a strange fact. The anaesthetist asks you to count backwards from ten; you reach seven, perhaps; and then a nurse is saying your name in a different room. Three hours have passed on the clock. In experience, none have. There was no darkness to sit through, no waiting, no sense of a gap. The before and the after simply touch.

If time were a river flowing on its own, the river should have flowed through those hours for you as for everyone else, and you should have floated on it, however unconsciously. It did not. The hours are real in the framework of the operating theatre—recorded, charted, billed—and they are absent from the framework of your experience. Both designations are correct within their own frame, and neither finds a time that passed by itself. The anaesthetic does not reveal a void beneath experience. It reveals how closely time is woven together with what appears and the framework in which it is counted, as the Interlude argued.

A Lived Example: Waking

Notice the next time you wake. There is often a moment—brief, easily missed—before the familiar self has assembled: light through the curtain, the weight of the blanket, a sound from the street, with no one yet in particular to whom they are happening. Then, in a rush, the designations return: this room, this day, my name, what I must do. The self does not seem to have been waiting somewhere through the night and then stepped back in. It is reassembled, quickly and reliably, from memory, habit and circumstance.

This is not offered as proof that there is no self, still less as a special state to cultivate. It is simply an ordinary moment in which the work of designation can be glimpsed as it happens. What seems in daytime to be a continuous observer, present behind every experience, turns out on waking to be put together again each morning—fully functional, and nowhere to be found apart from the putting together.

Dreaming

Between waking and dreamless sleep lies the most ordinary demonstration of all. In a dream a whole world appears: streets, faces, weather, a body that runs and is afraid. It functions by its own logic; the dreamed door opens and the dreamed fire burns. There is a dreamer inside it, who feels entirely real to itself. And on waking, none of it is found anywhere—not in the bedroom, not in the head, not in some other place where the dream was kept.

This is why the tradition reaches so often for the dream. Nāgārjuna closes his examination of arising, abiding and ceasing by likening all three to a dream (MMK 7.34), and the Diamond Sūtra places the dream among its images of conditioned things. The point is not that waking life is unreal, or that it is all in the mind. Chapter 12 shows why the dream cannot be used to make mind the last substance. The point is the taste. A dream is vivid and coherent, and it is not anything from its own side. Recognized as a dream while it is happening, as in a lucid dream, it loses none of its vividness, only its grip. That is the dream-like quality this book has tried to describe in waking appearance: solidly felt and fully functional, while nothing in it stands on its own.

Death as a Conventional Designation

The analysis dismantles both extremes simultaneously. As Chapter 6 argued, annihilation requires a self-existing entity to annihilate. Because no independent, self-standing self existed prior to death—since identity was always designated in dependence on conditions—death cannot be the destruction of a substance.

What, then, is death? It is designated, and how it is designated depends on the paradigm doing the designating. Biomedicine designates death as the irreversible cessation of circulatory or brain function; law designates it by criteria and certificate; contemplative traditions describe a dissolution of the elements and of gross consciousness, and speak of a mental continuum that goes on. Each designation is valid within its own framework, answerable to its own criteria and evidence. None of them finds a death that exists from its own side.

The same holds for continuity across death. A physical account traces the dispersal of matter and energy, and it is right about what it traces. The Buddhist account, which this book follows, traces something the physical one does not look for: the karmic continuity of a mental stream, in which one life conditions the next as one flame lights another. Each account can be applied correctly or incorrectly, by its own criteria. But neither the ending posited by the one nor the continuing posited by the other is found under ultimate analysis. On this view there is no production and no cessation other than what is conventionally designated; ultimately, both are empty.

Nāgārjuna examines this continuity directly. In his chapter on arising and dissolution he asks where the 'continuum of becoming' (bhavasaṃtati)—the stream supposed to link one life with the next—could be found, and finds it in none of the three times: not in the past, which is gone, not in the future, which has not come, and not, on the reading offered here, in a present that has no extent of its own (MMK 21.21). The continuum is not denied as a convention. It is not found as a thing that flows.

This is the sense of the homage discussed in Chapter 3. Death is not denied. It is relieved of the substance that would make it either a final annihilation or the passage of a soul.

Facing Death

Epicurus offered one of the most famous consolations in Western philosophy: death is nothing to us, for when we are, death is not, and when death is, we are not (Letter to Menoeceus). The argument is elegant, and it has comforted many. But it rests on the very picture this chapter has set aside. It assumes a self that is fully there while alive and simply ends at death—a self with a definite edge. Epicurus does not remove the fear of annihilation by questioning annihilation; he accepts it and argues that it cannot hurt.

The Madhyamaka answer is different in kind. It does not say that death cannot harm a self that will no longer exist. It says that the self whose ending is feared was never found to begin with—not as a soul that might pass on, and not as a substance that might be erased. Death is then neither an inherent wall at the end of a road nor an inherent doorway to another room.

This does not make death trivial, and it does not end grief. The empty chair at the table is still empty, and the loss is still a loss; What changes is the shape of the dread. The fear of death is, in large part, the fear of a self falling into nothing. When neither the self nor the nothing is found, the fear loses its object, while love, sorrow and care remain exactly where they were. In this sense Nāgārjuna's homage is not an abstract doctrine but a description of how death is met when it is met without reification.

Objection: Doesn't This Evade the Question of Rebirth?

A Buddhist reader may object that treating continuity beyond death as designated rather than found evades the tradition's central claims about karma and rebirth. A sceptical reader may object to the opposite: that it smuggles them in. Both objections assume that the question must be settled by finding something—a self that travels on, or a self that comes to an end.

The early tradition already refused that assumption. In the Questions of King Milinda, the monk Nāgasena is asked whether the one who is reborn is the same as the one who died, or another. Neither the same nor another, he replies, like a lamp that burns through the night: the flame of the last watch is neither the flame of the first nor a different one. Asked elsewhere whether anything passes over, he compares rebirth to a lamp lit from another lamp: nothing passes over, yet the second flame is not unconnected with the first (Milindapañha). The Madhyamaka analysis takes this one step further. Not only is there no self that passes over; there is no birth and no death found from their own side either. This does not leave rebirth in doubt. The book follows the tradition: actions bear fruit, in this life and beyond it, and one life conditions the next, as one flame lights another. That continuity is affirmed in the same way that the person who wakes is said to be the person who fell asleep: conventionally, as designated, and reliably. It is not a conclusion drawn from emptiness. Emptiness removes only the objection that rebirth would need a carrier, since nothing has ever had one. What the analysis adds holds for every account of death, Buddhist or physical: whatever is designated as continuing, or as ending, is not found when sought.