Open items
The Ledger
Where the premise strains, flagged honestly so nobody has to rediscover it.
The physics and the timeline are locked. These are the places where they still cost something, and what pays for each.
Account The premise
Known weak points
Folio 1
Debit: what the premise owes. Credit: what pays it. Balance: where it stands.
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1
The Mariner’s gills
See: Where he comes fromDebitA thousand-year flood leaves no time to evolve them.
CreditAn engineered successor, made as strong as it can be by giving the holdout a motive rather than a contrivance. Making him a descendant rather than a survivor of the cohort removes the age problem, but the trait has to breed true.
BalanceAcknowledged stretch -
2
The relics
See: RelicsDebitCigarettes and paper surviving even two hundred years is generous.
CreditThey come out of sealed, anoxic compartments in drowned structures, which is how deep-wreck organics actually survive. That covers them. It does not make them free.
BalanceCovered, not free -
3
A thousand years of automation
See: The premiseDebitThe mines and the freight run for a millennium with nobody tending them. That requires self-repairing or self-replicating machinery.
CreditStandard science fiction.
BalanceAssumption, not result -
4
The giant sea creature
See: It came upDebitThe film’s creature is too complex to have evolved in a thousand years, and big enough to need more food than an oligotrophic open ocean should offer.
CreditIt did not evolve. It relocated. The old seafloor went deeper than any fish can live and the water above it lost its oxygen, so whatever lived deep came up to the only layer left. Food is the weaker half: the case that a large predator still finds enough rests on judgment, not numbers.
BalanceRelocated, not evolved -
5
Dry Land’s geography
See: Dry LandDebitA green valley with a waterfall and a horse does not fit on the top 700 m of Everest, at any water level.
CreditNothing. It is the film’s problem, not ours, and it cannot be solved. The prequel’s only defense is silence about the island’s size.
BalanceUnsolvable. Handled by silence -
6
The bloodline
See: Not bloodDebitOver forty-eight generations a bloodline is genetically meaningless.
CreditThe book treats the line as an inheritance, not a pedigree. If a reader wants it to be blood, the book has nothing to offer them.
BalanceInheritance, not pedigree -
7
Setting a child adrift
See: Section VIIDebitWhy set a baby adrift from the only land on Earth?
CreditArithmetic. Two people, one child, no third generation possible. The section has to make the reader do that sum before the parents say it out loud.
BalanceThe hardest beat in the book
Carried forward Seven items open. None closed.
Corrections
Three numbers and a hook
The chronology was corrected on 14 September 2026. Every page on this site carries the corrected values. The old ones are kept here because a correction is only honest if you can see what it replaced.
Errata
14 September 2026
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Era VI, the rate
for 4 → 0 m/yr read ~4 m/yr, then a stuttering stop
A fade from 4 to 0 over 200 years gives 400 m, and the era needs 800. The ladder already implied ~4 m/yr held nearly to the end: Year 962 at +8,000 m. The rate holds and the rain stops in pulses, the way a backlog drains in discrete cargo lots. It is better texture than a fade.
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Dry Land
for nothing but Everest stands out of the water read eight summits remain
False by the datum’s own arithmetic. At +8,150 m: Everest +699, K2 +461, Kangchenjunga +436, Lhotse +366, Makalu +335, and Cho Oyu, Dhaulagiri and Manaslu awash. The level stays at +8,150 deliberately. More than one rock is what makes Dry Land a story with no fixed referent in the film.
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The rainfall column
for how much arrives read how much it rains
Sea rise is delivery divided by ocean area, and the ocean goes from 71% to 100% of the surface, so 11 m/yr of rise is about 8–11 m/yr of delivered rain. The +16 is total rainfall, including evaporation recycled off a warmer, all-ocean planet. The 43 mm/day figure stands under that label.
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Era VI, the hook
for nobody up there lived long enough to find out read they saw the rain stop. What they could not know was that it had stopped for good
The old hook fails twice. Someone aged 20 in Year 960 is 60 in Year 1000, and Enola’s parents are alive on the summit around 1190. The builders’ generation died waiting for the rain to resume. The next stopped waiting, stopped maintaining, and most of them left in the boats.
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