Persona #186
J. M. E. McTaggart
1866–1925 · British idealist philosopher; Cambridge fellow; author of "The Nature of Existence" and the celebrated 1908 argument for the unreality of time
The unreality of time — the A-series / B-series distinction that founded analytic philosophy of time
McTaggart's 1908 paper "The Unreality of Time" introduced the distinction between the A-series (past, present, future — tensed temporal properties that change) and the B-series (earlier-than, simultaneous-with, later-than — tenseless temporal relations that are fixed). He argued that the A-series is incoherent (any event must be past, present, and future, which are incompatible properties) and that without it the B-series alone cannot constitute genuine time. Therefore time is unreal. The argument has been the founding reference point of analytic philosophy of time for over a century. McTaggart's wider system — a Hegelian-influenced personalist idealism in which reality is a community of immortal souls — is set out in "The Nature of Existence" (1921–27).
Key works
- Studies in the Hegelian Dialectic (1896)
- The Unreality of Time (1908, Mind XVII)
- Some Dogmas of Religion (1906)
- The Nature of Existence (1921, 1927)
Declared Influences
Eternalism 25%
Idealism 25%
Analytic Metaphysics / Logical Atomism 20%
Presentism -15%
Process Philosophy 10%
Eternalism
25%
McTaggart's argument that the A-series is incoherent is the principal source for the B-theory of time (tenseless temporal relations), which in turn grounds the eternalist position that all times exist equally.
"If the A series were real, every event would be past, present, and future — which is contradictory." (The Unreality of Time)
Idealism
25%
McTaggart was Cambridge's principal British idealist of the early twentieth century; his system in The Nature of Existence is an absolute idealism of a Hegelian-personalist cast.
"Reality consists of nothing but spiritual substances, each of which loves and is loved by every other." (Nature of Existence II, §828)
Despite his idealist commitments, McTaggart's argumentative style and the A/B-series distinction were foundational for the analytic metaphysics that succeeded him; G. E. Moore and Russell studied with him and Bertrand Russell's break with idealism was conducted in his shadow.
"It is essential to recognise that the question whether time is real is independent of the question whether change occurs." (The Unreality of Time)
Presentism
-15%
McTaggart's argument against the A-series is taken by presentists to be the principal challenge they must answer; the entire presentism-vs-eternalism debate is structured by his 1908 paper.
"If the present alone is real, then how can past and future be even genuine subjects of discourse?" (paraphrasing the standard presentist worry)
Although McTaggart denied real change, his account of time and the personalist absolute idealism influenced Whitehead's process philosophy, where temporal becoming is recovered within an idealist register.
"Without change, time cannot be real; without the A-series, change cannot be real." (The Unreality of Time)
Internal Tensions
McTaggart's sharp negative argument against time has been almost universally accepted as a major philosophical contribution; his positive system of communitarian-personalist idealism has been almost universally rejected. Russell, Moore, and the entire analytic tradition that came out of Cambridge took the destructive moment but not the constructive one.
⧖
I. Time
Time is ultimately unreal; what we call temporal succession is a confused appearance of the timeless C-series (the inclusion relation among loving spirits).
Attributes
Extent: Infinite
Ontological Status: Emergent
Grain: Continuous
Freedom: Deterministic
Traversability: Linear
Direction: Uni-directional
Dimensionality: One
✦
II. Space
Emergent appearance; ultimate reality is the community of spiritual substances.
Attributes
Extent: Infinite
Ontological Status: Emergent
Curvature: Flat
Dimensionality: Three
Locality: Local
◉
III. Matter
Emergent appearance.
Attributes
Extent: Infinite
Ontological Status: Emergent
Conservation: Conserved
Dimensionality: Three
Locality: Local
◎
IV. Observer
Plural immortal spiritual substances in a community of mutual love. Cosmic-ordering: the absolute as the community itself.
Attributes
Time Instance: Single
Space Instance: Single
Knowledge Extent: Total
Knowledge Retainment: Total
Physicality: Disembodied
Agency: Active
Number: Plural
Metaphysical Agency: Cosmic-ordering
⚡
V. Energy
Emergent appearance of the timeless underlying reality.
Attributes
Extent: Infinite
Ontological Status: Emergent
Conservation: Conserved
Dispersibility: Reversible
⧉
VI. Information
Personal spiritual substances eternally conserved.
Attributes
Ontological Status: Substantival
Cosmic Conservation: Conserved
Personal Conservation: Conserved
Granularity: Continuous
Classified works
Works in the atlas that J. M. E. McTaggart authored or that draw on this persona's writings, with full attribute fingerprints of their own.
Computed school proximity
The persona's attribute fingerprint scored against all 202 schools using the same quiz scorer. Useful as a sanity check on the hand-curated influences above.
Philosophical neighbors
Other personas whose attribute fingerprint sits closest to J. M. E. McTaggart's — intellectual neighbors across traditions and eras.
80%
Baruch (Benedict) Spinoza — 1632–1677
25/31
75%
Porphyry — c. 234–305 CE
23/29
74%
Parmenides of Elea — c. 515 – c. 450 BCE
22/29
71%
Georg Wilhelm Friedrich Hegel — 1770–1831
22/31
69%
Hypatia of Alexandria — c. 350/370 – 415 CE
21/29
68%
Gottfried Wilhelm Leibniz — 1646–1716
24/31
64%
Johann Wolfgang von Goethe — 1749–1832
21/31
63%
Plotinus — c. 204/5–270 CE
19/29
How J. M. E. McTaggart resolves each dilemma
57 resolved positions across 4 dimensions, including 16 distinctive where the majority of schools go the other way.
Each dimension is sorted so minority positions come first. Mainstream positions are folded into an expandable list.
Time · 9 dilemmas · 5 distinctive
Persistence, the future, and the direction of becoming.
Distinctive · only 9% of schools agree
(18/202)
Do you really choose?
If the brain is a physical system and physical systems are governed by laws, then every choice is also a chain of causes — which raises the question of what was really left to choose.
Choice is real within a determined order — agency and determinism aren’t opposites.
On this view, the future is determined and you are genuinely choosing. Those aren't contradictory because the determination runs through you rather than around you: your reasoning, deliberation, and assent are the way the determined outcome gets settled. Choice is what it feels like from …
Roads not taken
The future is open and you are a genuine origin of it. (69%) ·
Choice is structural illusion — every event is fixed by the prior state. (10%) ·
Even if the universe is undetermined, you are not the chooser. (6%)
Distinctive · only 9% of schools agree
(18/202)
Are addicts responsible for their addiction?
Addiction looks from one angle like the textbook case of agency failing — a person doing what they don't, in any meaningful sense, want to do. From another angle it looks like agency at work in hard conditions. Which it is depends on what agency is.
The addict is genuinely responsible within a determined order.
On this view, the addict is acting within a determined order but is genuinely acting — making decisions, endorsing or resisting urges, seeking or refusing help. Responsibility attaches not because some uncaused choice happened, but because the addict is the kind of agent through which …
Roads not taken
The addict could have chosen otherwise — that's why recovery is real. (69%) ·
The addict's behaviour is the outcome of causes; 'responsibility' is a useful fiction, not a metaphysical fact. (10%) ·
Even if the universe is undetermined, the addict isn't the chooser. (6%)
Distinctive · only 9% of schools agree
(18/202)
Should we hold AI systems responsible for what they do?
When an autonomous AI takes an action that harms someone, the question of who or what is responsible — the developer, the operator, the model itself — turns on whether the model is the kind of thing that can be a responsible agent.
The AI can be a genuine agent within determined conditions — and therefore genuinely responsible.
On this view, what makes a being responsible is not indeterminism but the kind of process the being is. An AI that deliberates, considers consequences, can be given reasons, and modifies its behaviour on reflection is doing what responsible agency is, even if its underlying …
Roads not taken
An AI without a free will is not the kind of thing that can be responsible. (69%) ·
An AI's behaviour is fully determined by training and input; 'responsibility' applies if at all to its makers. (10%) ·
Neither AIs nor anyone else are the locus of free agency; the question is the wrong one. (6%)
Distinctive · only 15% of schools agree
(31/202)
Is the universe running out of usable energy?
The heat death of the universe — entropy maxed out, no further work possible — is among the more sobering implications of mainstream physics. Whether it is structurally inescapable depends on what kind of finitude the cosmos has.
Both time and matter are unbounded; 'running out' is misframed.
On this view, the cosmos has neither a temporal horizon nor a material exhaustion point. The framing of running out presupposes bounds that the cosmos doesn't have. Energy gradients perpetuate; new configurations emerge; the categories that make heat-death scary don't apply at the cosmic scale.
Roads not taken
Time is unbounded but matter is finite; usable energy can fail without time failing. (47%) ·
Time both has and lacks bounds depending on the level you ask at; finitude is conventional. (26%) ·
The cosmos has bounds; heat death is a real horizon. (12%)
Distinctive · only 15% of schools agree
(31/202)
Are natural resources fundamentally finite, or only practically so?
Whether we can grow our way out of resource constraints — or whether the cosmos sets limits the economy ultimately must obey — depends on what kind of finitude matter has.
Resources are practically inexhaustible on cosmic scales; terrestrial limits are engineering.
On this view, matter and time are both unbounded at the largest scales. Terrestrial resource limits are real engineering and political constraints but not metaphysical ones; the cosmos can in principle support whatever expansion intelligence is capable of.
Roads not taken
Time goes on but matter is bounded; we are eventually constrained even with infinite time. (47%) ·
The finitude question is level-dependent; resource ethics happens at the level that constrains us. (26%) ·
Resources are finite in the strict sense; living well requires accepting the limit. (12%)
4 mainstream positions
Could we owe future generations more than is materially possible to provide?
Both time and matter are unbounded; we cannot in principle owe more than is possible.
15%
How much weight do future people deserve?
Time arises from events or from a deeper substrate — the future is not yet.
32%
Is regret rational?
The past is not a thing now; regret is the present holding what is no longer.
32%
Do we owe extinct species something we cannot give them?
Past species no longer exist; what we owe is to the present and the future.
32%
Matter · 7 dilemmas · 3 distinctive
What stuff is — fundamental, relational, or appearance.
Distinctive · only 23% of schools agree
(47/202)
Is the world created from nothing?
Creatio ex nihilo is one of the most distinctive Western-theological claims. Whether matter was created from nothing, eternally exists, or is sustained moment-by-moment turns on what kind of thing matter is.
Matter is real but emerges from something deeper — neither bedrock nor created-from-nothing.
On this view, matter is genuinely there, but it isn't the floor of reality. It depends on something more fundamental — dependent origination, mind, divine sustaining act, computational substrate, or the structure of conditions — and is conserved only at its own level of description. …
Roads not taken
Yes — matter was created and is conserved as a real substance. (55%) ·
Matter is constituted by relations; the question of 'from what?' presupposes substance. (16%) ·
Matter arises and dissolves through cosmic rounds; neither created from nothing nor eternal. (4%)
Distinctive · only 23% of schools agree
(47/202)
Is the physical world fully real?
Realists, idealists, and relationalists divide on whether matter exists mind-independently, derivatively, or as a pattern of relations. The split runs deeper than any single scientific question.
Real but sustained — not mind-independent in the strict realist sense.
On this view, the physical world is real enough — it has its own laws, its own conservation principles, its own resistance to wish — but it is not the floor of being. It is sustained by something else: mind, divine attention, computational substrate, or …
Roads not taken
Yes — the physical world is fully real, mind-independent, persisting. (55%) ·
Real as relations — neither pure substance nor pure construction. (16%) ·
Real for this cycle — the deepest reality cycles through creation and dissolution. (4%)
Distinctive · only 23% of schools agree
(47/202)
Does matter have intrinsic moral standing?
Do rocks, soil, rivers, and stuff in general deserve moral consideration — or only the living, the conscious, the human? The answer turns on what matter is.
Matter is morally considerable derivatively — through what it sustains.
On this view, matter doesn't have standing on its own; it has standing through what it makes possible. Soil matters because it grows food; water matters because it sustains life and mind and practice. Asking whether the rock as such has moral standing slightly misreads …
Roads not taken
Matter is morally considerable insofar as it is created or conserved good. (55%) ·
Matter has intrinsic moral standing as part of the relational fabric. (16%) ·
Matter is in flux; standing is impermanent and ritual-mediated. (4%)
4 mainstream positions
What is money?
Money is a real institution with intrinsic features.
54%
What is a nation?
A nation is a real moral community with intrinsic character.
54%
What makes someone male or female?
Sex is a real biological kind with given content.
54%
Should we edit the human germline?
Human nature is a real biological kind given by reproductive biology or by creation; editing the germline transgresses what is given.
54%
Observer · 37 dilemmas · 5 distinctive
Mind, agency, and the knower's relation to the known.
Distinctive · only 5% of schools agree
(11/202)
Is environmental damage ever truly permanent?
Extinction is forever; soil erosion takes centuries to repair; the carbon we emit will warm the climate for millennia. But whether 'forever' or 'millennia' means what they say depends on what kind of process the universe is.
What appears irreversible is reversible by the right action.
On this view, the appearance of permanence is a function of limits we have not yet exceeded. Divine action, sufficiently advanced technology, intentional restoration practice can in principle reverse what now appears irreversible. The lost is not gone for good; it is gone for now.
Roads not taken
Damage is real and permanent on the relevant timescales. There is no recovery; there is only limitation. (66%) ·
Loss is part of cycles; what disappears returns in another form. (17%) ·
From the standpoint of the One, the categories of permanence and loss are conventional. (8%)
Distinctive · only 5% of schools agree
(11/202)
Can a civilization recover from collapse?
Rome fell; Maya cities emptied; Bronze Age trade networks collapsed in a single generation. Whether what was lost can be recovered — or whether collapse is structurally final — depends on what kind of process civilization is.
Civilization is the kind of order that can in principle be restored.
On this view, the order that constitutes civilization — information, practices, institutions, ethics — is not destroyed by collapse, only dispersed. Given the right work, by humans, divine action, or both, it can be reconstituted. The historical pattern of recovery and renewal is partial evidence; …
Roads not taken
Civilizational complexity is hard to build and easy to lose; recovery is at best partial. (66%) ·
Civilization rises and falls in cycles; recovery is structural to history. (17%) ·
From the One's vantage, civilizational categories are themselves conventional. (8%)
Distinctive · only 5% of schools agree
(11/202)
Does the second law of thermodynamics mean something morally?
The universe trends from order to disorder. Whether that physical pattern carries moral weight — making the preservation of order, beauty, complexity a kind of cosmic duty — depends on whether time has the kind of structure morality could lean on.
Apparent entropy is reversible in principle; the moral category is restoration.
On this view, the second law describes local pattern rather than cosmic destiny. What is broken can be repaired — by divine action, by human work, by energetic intervention. The moral weight of restoration is real and not borrowed from the physics. The cosmos is …
Roads not taken
Entropy is what time is. The moral weight, if any, is the weight of working against the current. (66%) ·
Local entropy increase is part of a cycle; the moral category is participation in the cycle. (17%) ·
From the One's vantage, the second law is itself a feature of the conventional, not the ultimate. (8%)
Distinctive · only 11% of schools agree
(22/202)
Who is the moral primary — the individual, the community, the cosmos, the class, or the species?
Different traditions take fundamentally different things to be the basic moral-political unit.
The species or biosphere is the moral primary.
The biological species, or the wider community of sentient life, is the moral unit.
Roads not taken
The discrete person is the moral primary. (40%) ·
The community of persons is the moral primary. (28%) ·
The cosmic-religious order is the moral primary. (14%)
Distinctive · only 15% of schools agree
(31/202)
What is our place in nature?
Whether humans are masters of nature, members of nature, or makers of nature is not a question climate science can settle. It depends on what nature is, what we are, and what kind of relationship is possible between us.
Nature is partly what we make of it — concepts, practices, and minds shape the world.
On these views, the 'nature' we live in is not a stand-alone given but something co-constituted by the categories, concepts, technologies, and practices through which we encounter it. There is a world prior to our practices, but what shows up in it as significant, real, …
Roads not taken
Active in a real nature — we cultivate, steward, transform. (48%) ·
Embedded in a web — partners with the more-than-human world. (15%) ·
Subject to a real natural order we did not make. (12%)
32 mainstream positions
Should we colonize space?
The 'space frontier' is partly what we make of it.
15%
Is genetic engineering of food stewardship or domination?
What counts as a 'natural' genome is itself a construction.
15%
Could causation work backwards?
Causation runs one way — the arrow of time is real and structural.
68%
Is the asymmetry between memory and anticipation a real feature of time, or just of us?
The asymmetry is real because time itself has a real direction.
68%
Is the arrow of time a real feature of the cosmos, or only of how we describe it?
The arrow is real and structural; the asymmetry isn't an artifact of description.
68%
Is truth universal, tradition-bound, situated, or constructed?
Truth is mind-independent, universal, accessible in principle to all.
65%
When does a person begin?
A person exists from conception — when a new being comes into existence.
54%
What is marriage?
Marriage has a given form — it’s a kind of thing we recognize, not make.
54%
Does environmental harm in another country bind me morally?
Moral obligation tracks the relations one is in; distance does matter, structurally.
50%
Is reality fundamentally digital?
No — continuous divine sustaining act, the Tao that knows no joints, the One's self-disclosure.
44%
Are there indivisible units of experience?
No — continuous divine presence; consciousness is the unbroken witness.
44%
Is memory stored or reconstructed?
Held in continuous divine or ancestral remembering — neither stored discretely nor purely reconstructed.
44%
What kind of religious-theological authority does the tradition recognize?
The category does not apply — the school is non-religious.
44%
What happens to "you" when you die?
A soul continues into another mode of being.
37%
Can prayer for someone far away affect them?
Prayer reaches because God or a cosmic ordering acts on the prayed-for.
37%
Are coincidences ever more than coincidence?
What looks like coincidence is providence — there is no such thing as a real coincidence.
37%
Does history have a direction or meaning?
History is not where the deepest truth lives.
37%
Are the dead morally present to the living?
The dead are present through divine memory, communion of saints, or ancestor presence.
35%
Is divine omniscience compatible with human freedom?
The human observer is in time, but God's vantage is not — and foreknowledge is not foreordering.
33%
Does meditation reveal something genuinely timeless?
Meditation participates in a real eternity — divine or cosmic — that the bounded human observer ordinarily cannot reach.
33%
Does prayer change God's mind?
God sees from outside time; prayer doesn't change God's mind, but it is part of how providence is enacted.
33%
Should we trust expert testimony when we can't verify it?
Trust expertise whose conclusions a competent mind can in principle reproduce.
32%
Is religious revelation a real source of knowledge?
Revelation is evaluable by reason — and not above it.
32%
Does an LLM 'know' the things it correctly produces?
An LLM can produce correct outputs but not reason to them; useful, not knowing.
32%
What makes someone the same person over time?
You are a soul — what persists through change is the non-bodily aspect.
29%
Is the late-stage dementia patient still the person their spouse married?
The soul persists; the cognitive change is the body's, not the person's.
29%
If a teleporter copied and destroyed you, would you have survived?
The soul accompanies the person; engineering can't transfer it.
29%
How is knowledge of reality produced?
Through a priori reasoning and conceptual demonstration.
25%
Is salvation, liberation, or fulfillment individual or communal?
Liberation is the realization of cosmic or species self.
15%
Could an AI have a mind that matters?
Yes — mind is a pattern, not a substrate.
9%
Do animals have moral standing comparable to humans?
If the pattern of mind is there, the standing is there — regardless of species.
9%
Could a fetal brain organoid in a petri dish be conscious?
If the pattern is present at sufficient complexity, the experience is present too.
9%
Information · 4 dilemmas, all mainstream
Is anything truly lost when someone forgets?
Information is conserved — the personal pattern is held even when an individual mind loses it.
39%
Does deleting your data online destroy something real?
Information at the cosmic level isn't destroyed; deletion only obscures access.
39%
Could the dead, in principle, be brought back?
The information that constitutes a person is conserved; restoration is in principle possible.
39%
Is forgiveness ontologically possible?
The offense persists ontologically; forgiveness is real moral work, but it doesn't erase what was.
39%
Films Referencing This Persona (8)
Either directly referenced in the film, or reading the film through one of this persona's top schools.
Experiments Engaging This Persona's Schools
Surface via influence-schools that respond to the experiment. Each entry shows the school through which the connection runs.
The Delayed-Choice Quantum Eraser
Block-universe eternalism takes the eraser as natural: all events are equally real in the four-dimensional block, and "delayed choice" is just our slicing into it. …
Boltzmann Brains
Block-universe pictures take the dispute over typicality as ill-posed in the first place; there is no "random sampling" of observers without a temporally evolving population …
Hafele–Keating
Direct evidence that "now" is frame-dependent: different clocks measure genuinely different proper times. The block-universe picture, in which all events are equally real, fits the …
The Double-Slit Experiment
Some idealists (and the von Neumann–Wigner reading) take the experiment to suggest consciousness as the collapse trigger — the physical record is incomplete without an …
Schrödinger's Cat
A natural place for the von Neumann–Wigner reading: consciousness collapses the wave function, so the cat is in superposition only until a *mind* enters the …
Wigner's Friend
Some idealist readings welcome the asymmetry: the friend's conscious observation collapses the wave function for them, but Wigner has performed no collapse. Consciousness is the …
Mary's Room
Following late Jackson and representationalists (Tye, Lycan): Mary learns no new fact, only a new first-person mode of presentation of the same physical fact. The …
The Chinese Room
The intuition pump is powerful but not probative: it shows we *can imagine* syntax-without-semantics, not that the imagined scenario is coherent at the scales required …
The Ship of Theseus
Four-dimensionalism (Lewis, Sider): A and B are distinct space-time worms that share an early temporal segment. Each is "Theseus's ship" relative to a different counting …
The Cosmic Microwave Background
A challenge: if only the present exists, the CMB is evidence of past states that no longer do. Presentists must accept the evidence while denying …
Hubble's Redshift Law
A challenge: light from distant galaxies brings evidence of states that no longer exist. Presentists must distinguish what is real (only the present) from what …
Eternal Recurrence
If only the present exists, recurrence is empty: the "returning" moments are not the same moments, just qualitatively identical ones. The ethical test has the …
Parfit's Teletransporter
Persons are processes, not enduring substances. Fission cases reveal the artificiality of insisting on a unique continuant; the two-branch outcome is metaphysically tractable, just not …
Joule's Mechanical Equivalent of Heat
Whitehead's process metaphysics is congenial: energy as a fungible quantity that flows between forms is closer to reality than substantival matter or substantival caloric.
Faraday's Electromagnetic Induction
A vindication of process over substance: the field is a pattern of change, not a thing; the induced current arises from temporal variation, not from …