A scientific report from the Essentia Memoria game universe. Its measurements come from the game's simulation; its real-world values come from the published works it cites.

Scientific report

Why the courtyard settlement loses heat: at -23.9 °C its public room pours 28.5 MJ a day through each square metre of wall

World: Reluctant · Happened: October 29, 2026 at 2:31 AM UTC · Published: October 29, 2026 at 2:31 AM UTC

We ran the game’s own heat law on one square metre of the room’s wall, bare and then lined with timber, from the same cold start. With the matter table’s middle values the lining saves 56% of the first day’s heat; across what the wall may be made of the saving lies between 1% and 86%. By the rule we registered before the run the conduction explanation is supported, so the room’s keeper lines its back wall with timber.

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Explanatory visualisation, drawn from the record's numbers. It is not footage of the event: nobody filmed it.

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Transcript

News from the Essentia Memoria game universe. Why the courtyard settlement loses heat: at -23.9 °C its public room pours 28.5 MJ a day through each square metre of wall. We ran the game’s own heat law on one square metre of the room’s wall, bare and then lined with timber, from the same cold start. With the matter table’s middle values the lining saves 56% of the first day’s heat. Across what the wall may be made of the saving lies between 1% and 86%. By the rule we registered before the run the conduction explanation is supported, so the room’s keeper lines its back wall with timber. This is the game’s heat law, not a survey of a real building. The wall is read as masonry because the room is built of plaster, and the table’s masonry range runs from light brick to concrete: that range is why the saving is so wide. The engine has no surface air films, no draughts, no windows or door, and no sun. The room is held at 20 °C and the wall starts at the outside temperature. No human has reviewed it. This report was written from the world record by a fixed template. The full story and its source records are on essentiamemoria.com.

The question

Why does the courtyard settlement lose heat, and would lining its public room’s wall with timber keep it?

Claims, and where each one comes from

Air temperature in the courtyard settlement on Reluctant, 2026-10-29 (the coldest of 94 towns with a walled public room)-23.9 °C
Game simulation · Set in code src/lib/world/per-planet-weather.ts · planetClimateNow
Temperature the room is kept at (the design)20 °C
Game simulation · Set in code src/lib/broadcast-programming/public-experiment.ts · HEAT_LOSS_DESIGN.roomC
Wall thermal conductivity (game matter table; brick 0.15–1.31, concrete 0.8–2.5; from Wikipedia (en), “List of thermal conductivities”, as of 2026-10-21; the row cites the rows' own sources, rows Brick, Concrete)1.325 W m⁻¹ K⁻¹ (0.15–2.5)
Game simulation · Set in code src/lib/materials/matter-record.ts · PROPERTY_DRAFT.masonry.thermalConductivityWmK
Wall specific heat (game matter table; brick 0.840, concrete 0.880 J g⁻¹ K⁻¹; from Wikipedia (en), “Table of specific heat capacities”, as of 2026-10-21; the row cites the table's sources, table “Mass heat capacity of building materials”)860 J kg⁻¹ K⁻¹ (840–880)
Game simulation · Set in code src/lib/materials/matter-record.ts · PROPERTY_DRAFT.masonry.specificHeatJkgK
Wall density (game matter table; brick 1700 to concrete 2400 kg m⁻³; from Wikipedia (en), “Density”, as of 2026-10-21; the row cites the list's sources, section “Various materials” of the list of densities)2050 kg m⁻³ (1700–2400)
Game simulation · Set in code src/lib/materials/matter-record.ts · PROPERTY_DRAFT.masonry.densityKgM3
Timber thermal conductivity (game matter table; dry wood, across species and directions; from Wikipedia (en), “List of thermal conductivities”, as of 2026-10-21; the row cites The Royal Society and the row's own sources, row Wood, unspecified)0.105 W m⁻¹ K⁻¹ (0.04–0.17)
Game simulation · Set in code src/lib/materials/matter-record.ts · PROPERTY_DRAFT.wood.thermalConductivityWmK
Timber specific heat (game matter table; wood, 1.7 typical (1.2 to 2.9) J g⁻¹ K⁻¹; from Wikipedia (en), “Table of specific heat capacities”, as of 2026-10-21; the row cites the table's sources, table “Mass heat capacity of building materials”)2050 J kg⁻¹ K⁻¹ (1200–2900)
Game simulation · Set in code src/lib/materials/matter-record.ts · PROPERTY_DRAFT.wood.specificHeatJkgK
Timber density (game matter table; sim/sciences/physics/material-canon#wood.densityKgM3; from sim/sciences/physics/material-canon#wood.densityKgM3)700 kg m⁻³ (700–700)
Game simulation · Set in code src/lib/materials/matter-record.ts · PROPERTY_DRAFT.wood.densityKgM3
E1, registered before the run (2026-10-29T02:26:53.075Z, hash a7db49265082): the lining cuts the heat by R_lining / (R_wall + R_lining)53%
Game simulation · Set in code src/lib/broadcast-programming/public-experiment.ts · steadyLiningEffect
The rule, registered before the run: supported if the middle case cuts the heat by at least this and no case makes it worse; refuted below the second number30% / 10%
Game simulation · Set in code src/lib/broadcast-programming/public-experiment.ts · HEAT_LOSS_DESIGN
Heat the room supplies through 1 m² of bare wall in the first day (middle values)28.5 MJ
Game simulation · Computed by src/lib/materials/matter-exchange.ts · stepMaterialInteraction (runWallDay, bare) · dt=60 s, area=1 m², room=20 °C, wall=0.22 m masonry in 6 slabs, hours=24, lining=0.02 m wood in 2 slabs, outside=-23.9 °C · runs 1 · seeds deterministic (no randomness)
The same, with the lining (same engine, same start)12.5 MJ
Game simulation · Computed by src/lib/materials/matter-exchange.ts · stepMaterialInteraction (runWallDay, lined) · dt=60 s, area=1 m², room=20 °C, wall=0.22 m masonry in 6 slabs, hours=24, lining=0.02 m wood in 2 slabs, outside=-23.9 °C · runs 1 · seeds deterministic (no randomness)
Heat saved by the lining, middle values56%
Game simulation · Set in code src/lib/experiment-mind/evidence-evaluator.ts · evaluateMeasurements
Heat saved across what the wall and the timber may be (the uncertainty)1% – 86%
Game simulation · Computed by src/lib/materials/matter-exchange.ts · stepMaterialInteraction (runWallDay) · dt=60 s, area=1 m², room=20 °C, wall=0.22 m masonry in 6 slabs, cases=the four corners of the two conductivity ranges, hours=24, lining=0.02 m wood in 2 slabs, outside=-23.9 °C · runs 10 · seeds deterministic (no randomness)
E2: share of the first day’s heat that stays in the bare wall, warming it (middle values)30%
Game simulation · Computed by src/lib/materials/matter-exchange.ts · stepMaterialInteraction (runWallDay, bare) · dt=60 s, area=1 m², room=20 °C, wall=0.22 m masonry in 6 slabs, hours=24, lining=0.02 m wood in 2 slabs, outside=-23.9 °C · runs 1 · seeds deterministic (no randomness)
Case wall-low·lining-low: wall k 0.15, timber k 0.04 — bare · lined · saved7.4 · 4.7 MJ · 36%
Game simulation · Computed by src/lib/materials/matter-exchange.ts · stepMaterialInteraction (runWallDay) · dt=60 s, area=1 m², room=20 °C, wall=0.22 m masonry in 6 slabs, hours=24, kWall=0.15, lining=0.02 m wood in 2 slabs, kLining=0.04, outside=-23.9 °C · runs 2 · seeds deterministic (no randomness)
Case wall-low·lining-high: wall k 0.15, timber k 0.17 — bare · lined · saved7.4 · 7.3 MJ · 1%
Game simulation · Computed by src/lib/materials/matter-exchange.ts · stepMaterialInteraction (runWallDay) · dt=60 s, area=1 m², room=20 °C, wall=0.22 m masonry in 6 slabs, hours=24, kWall=0.15, lining=0.02 m wood in 2 slabs, kLining=0.17, outside=-23.9 °C · runs 2 · seeds deterministic (no randomness)
Case wall-high·lining-low: wall k 2.5, timber k 0.04 — bare · lined · saved48.7 · 7.0 MJ · 86%
Game simulation · Computed by src/lib/materials/matter-exchange.ts · stepMaterialInteraction (runWallDay) · dt=60 s, area=1 m², room=20 °C, wall=0.22 m masonry in 6 slabs, hours=24, kWall=2.5, lining=0.02 m wood in 2 slabs, kLining=0.04, outside=-23.9 °C · runs 2 · seeds deterministic (no randomness)
Case wall-high·lining-high: wall k 2.5, timber k 0.17 — bare · lined · saved48.7 · 20.1 MJ · 59%
Game simulation · Computed by src/lib/materials/matter-exchange.ts · stepMaterialInteraction (runWallDay) · dt=60 s, area=1 m², room=20 °C, wall=0.22 m masonry in 6 slabs, hours=24, kWall=2.5, lining=0.02 m wood in 2 slabs, kLining=0.17, outside=-23.9 °C · runs 2 · seeds deterministic (no randomness)
Verdict on E1 by the registered rulesupported
Game simulation · Set in code src/lib/experiment-mind/evidence-evaluator.ts · evaluateMeasurements

References, checked at their registry

Review

Not peer reviewed. The template was written with an AI assistant (Claude); the numbers come from running the game’s code.

The registration was stored before the run and its hash matched at evaluation.
Control and intervention used the same engine, the same start and the same steps.
Each number in the headline and summary is accounted for by a listed claim.

Code version: 656c2cf58965

What the record does not say

This is the game’s heat law, not a survey of a real building. The wall is read as masonry because the room is built of plaster, and the table’s masonry range runs from light brick to concrete: that range is why the saving is so wide. The engine has no surface air films, no draughts, no windows or door, and no sun; the room is held at 20 °C and the wall starts at the outside temperature. No human has reviewed it.

How this was written

A registration (the prediction, the metric and the rule) was stored before any run and its hash is checked against the one the verdict used. Control and intervention ran in the same engine from the same start; every case across the source ranges is listed. Every number in the headline and summary is one of the claims below.

Source records: registration:experiment:heat-loss:e1:r1:(2.5.7.):5838aae9f3aafa5d · code:src/lib/materials/matter-exchange.ts#stepMaterialInteraction · code:src/lib/materials/matter-record.ts#masonry · code:src/lib/materials/matter-record.ts#wood