abstract philosophy-of-mind positions:
• No macroscopic quantum consciousness: CTGP suggests that qualia require classicalized dynamics.
Proposals requiring quantum coherence at the neural scale (e.g., Penrose-Hameroff) are
incompatible with CTGP's classicalization requirement.
• Substrate signatures: if the physically instantiated criterion is correct, there should in
principle be signatures distinguishing genuinely qualia-capable processes from digital
simulations, even when they are functionally equivalent. Identifying such signatures is a research
program, not a settled result.
• Memory as re-instantiation: CTGP suggests that memory recovery is best understood as re-
instantiation of patterns at the present Σ_σ, not retrieval of stored qualia. This maps onto the
empirical finding of memory reconsolidation — the fact that recalled memories are transiently
labile and can be modified by conditions at the time of recall.
D.8 Pause Argument and Process Continuity
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A system whose physical processes are intermittently halted and resumed may report uninterrupted
subjective continuity. From its internal perspective the process may appear continuous even though
the underlying physical process is discontinuous. This suggests that experienced continuity does not
strictly track uninterrupted physical process continuity.
Within CTGP, this distinction is taken to support the view that the physical instantiation of
processes—rather than their abstract functional structure alone—plays a role in determining whether
experience occurs. The framework does not claim that all paused systems lack experience; instead,
the pause argument motivates the domain-relative instantiation criterion, emphasising that the
nature of a process’s physical unfolding, including its causal continuity, may be relevant to
whether it is associated with experience.
D.9 Process Continuity vs. Experienced Continuity
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This section contrasts process continuity with experienced continuity. A thought experiment in which
a system is paused, stored, and restarted illustrates that the felt continuity of a process does not
guarantee that the underlying process is continuously instantiated. Experienced continuity can thus
arise from representational mechanisms even when physical becoming is intermittent.
CTGP proposes that genuine physical continuity—an ongoing, physically instantiated process at the
present edge Σ_σ—may be required for processes to be associated with experience. This argument does
not prove that paused systems lack experience; rather, it underscores the open question of how the
continuity of physical processes relates to phenomenal experience.
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Appendix E. Supernova 1987A: A Worked Example of Causal Records and Co-presence
----------------------------------------------------------------------------------------------------
SN1987A illustrates Postulate 2 (Causal Continuity) and Postulate 4 (Persistence Through Causal
Continuity and Records), and demonstrates the consistency of the cosmological foliation of §9.3. It
is not evidence for CTGP over eternalism: every fact about the event is equally derivable in a
block-universe reading. CTGP’s empirical exposure lies elsewhere, in the requirement that physical
law be generable from the present (§12.2). The role of the supernova here is narrower and still
worth filling: it shows that CTGP’s account of access to the past — never retrieval, only
inheritance — is concretely instantiated in a case where the reconstruction is unusually clean.
E.1 Distant Is Not the Same as Spacelike
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This distinction is stated first, because every confusion about the case descends from conflating
the two. The interval between two events is not classified by spatial distance alone. A signal that
crosses between them disqualifies the pair from being spacelike, however far apart they are.
Pair of events | Interval | Significance for CTGP
------------------------+---------------------------------------------+----------------------------
Collapse → photon | Null | Ordinary causal propagation
detection (1987) | |
Collapse → neutrino | Essentially null (ultrarelativistic; | Ordinary causal propagation
detection | strictly timelike, since neutrinos are |
| massive) |
Collapse → | Spacelike | Requires a foliation to
contemporaneous Earth- | | define “contemporaneous”
state | |
1987 detection → Earth | Timelike | Ordinary causal succession
now | |
Table E.1. Interval classification of the event pairs relevant to SN1987A.
The collapse lies on our past light cone. Reconstructing it from its messengers is ordinary causal
inference, not access to a spacelike elsewhere, and nothing in that reconstruction bears on
simultaneity. The one genuinely spacelike pair is the third, which by construction exchanges nothing
with us; §E.5 concerns that pair alone.
E.2 The Event in CTGP’s Tenses
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A blue supergiant in the Large Magellanic Cloud, roughly 168,000 light-years distant, underwent core
collapse. The neutrino burst was detected on 23 February 1987; the optical signal followed within
hours.
The neutrino lead is a fact about emission, not propagation. Neutrinos decoupled from the collapsing
core immediately and escaped; the shock required additional hours to traverse the envelope and break
out of the photosphere. Both messengers then crossed 168,000 years of intervening space at, or
indistinguishably near, the speed of light. Nothing outran anything. Under CTGP the correct tensed
description is as follows.
• The collapse was generated at an earlier stage Σ_{σ′} and does not now exist.
• The emitted neutrino and photon fields were generated at every intervening stage, as present-state
field configurations, in unbroken causal continuity.
• The 1987 detection was not the past arriving. It was a present-state detector interacting with a
present-state field whose organization is a lawful transformation of the organization the source
had when the source was present.
• There is no retrieval across time. There is only inheritance within the present.
None of this is a retrieval operation dressed in tensed language. Each arrow in the chain source
state → radiation state → later radiation state → detector state relates two adjacent stages, and at
every stage only the current state exists. The chain is long; it is nowhere non-local, and at no
point does a photon carry a preserved fragment of 1987 forward as an existing past object.
E.3 The Event’s Reality Did Not Depend on Being Observed
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The independence of the event from its observation is CTGP-consistent: the collapse was a generative
stage of M(σ), not a fact constituted at detection. The messenger structure is the reason. Two
channels, emitted under different source conditions, arrived in the order and with the separation
that source physics dictates. An observation-constituted event would owe no such debt to stellar-
interior physics that had, on that view, never occurred.
The claim that distant events are not real until observed is not a position any serious
interpretation holds, and refuting it carries little weight. The live alternatives are eternalism
and the growing block, neither of which this argument touches.
E.4 What “Cosmic Receipts” May and May Not Mean
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The ledger metaphor is useful and requires care. Read loosely, it implies a stored past — a
repository holding earlier states in reserve — which is exactly the eternalist picture CTGP rejects.
Under Postulate 4, a record is not a preserved earlier state. It is a presently existing physical
organization whose structure is a lawful transformation of an earlier organization that no longer
exists. Some consequences stay organized as records; others become distributed and effectively
unrecoverable. SN1987A is a case in which several stayed organized and mutually cross-validating.
Stated carefully, the metaphor says this: the present carries forward organized consequences from
which earlier stages can be reconstructed, because the transformations were lawful and partially
information-preserving. The universe does not keep books. The universe is the current page, written
by the previous page, with the previous page gone.
E.5 Co-presence: What Is Entailed and What Is Selected
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The claim that SN1987A demonstrates nonlocal temporal comparability divides into two claims, only
one of which is contested.
E.5.1 That There Was a Co-present Earth-Stage Is Entailed, Not Evidenced
If the collapse was generated at all, the stage it belonged to was generated — and generation is not
selective about where it happens. Our region was in that stage. Denying this would require the LMC’s
collapse to have been real while our own concurrent existence was somehow in abeyance, which is
incoherent rather than merely unsupported.
The concurrency claim has specific content. Earth had existed for roughly 4.54 billion years by
then; the progenitor, Sanduleak −69 202, was a massive star whose whole lifetime spanned only on the
order of ten million years, so it was born, lived, and died entirely within Earth’s existing
lifetime. The co-present Earth-stage was an Earth with oceans, an atmosphere, a biosphere, and
hominins. Earth’s own stage also left its own causal records — ice cores, sediments, and the genomes
still being carried forward — so its reality is independently attested, not inferred from the
supernova.
This follows from Postulate 1 together with the reality of the event. It does not require the
supernova’s light, and it is not something the light could have established.
E.5.2 Which Earth-Stage It Was Requires the Foliation
What the evidence alone underdetermines is the pairing. We reach the collapse along our past light
cone; we reach Earth 168,000 years ago through terrestrial records; we never reach the two as a
pair, because that pairing is spacelike and exchanges nothing. The pairing is produced by a
subtraction, and the subtraction requires a slicing.
The sensitivity is substantial. To first order, Δt′ ≈ vx/c², and x here is 168,000 light-years, so
an observer coasting through Earth at 0.5c assigns the collapse to an Earth-moment displaced by
roughly 84,000 years from ours (about 97,000 years once the Lorentz factor is included). The photons
and the light cone are the same; the answer differs. Such an observer does not claim that Earth was
nonexistent: the observer affirms concurrency and disputes individuation, which is exactly the
division drawn above.
CTGP supplies what fixes the pairing, and supplies it from §6.1 rather than from the supernova:
cosmological time fixes which stages are co-present, and in our universe it approximately coincides
with the CMB rest frame and is realized along the comoving matter worldlines (§9.3.1). The supernova
does not select the foliation, and it could not. Presenting it as doing so would invite a
circularity objection against something the framework already supplies independently.