CoAgnes Labthe study spaceresearch preview · build 1ececa2

a wave is settlingengine working on #31membrane waiting at #28

Wave 4 · Inside the Cell · record #31domain.factcell.result

#31 · the result is marked

Assess · result, sown at #8 to hear it, keeps it and announces it as #32.

Came fromthe machineThe machine wrote it while the engine took #30: CellSpace marked the Cell's result. step 170

Read as

when the engine took #31

  1. 171The engine takes #31ENGINE.CURSOR · propagate

    a wave is settlingengine: working on #31membrane: waiting at #28

    The log
    1. #0a listener
    2. #1a doer
    3. #2listener: the charter
    4. #3doer: the author
    5. #4listener: charter seen
    6. #5listener: blueprint seen
    7. #6doer: the planner
    8. #7listener: assess · charter
    9. #8listener: assess · result
    10. #9doer: the evaluator
    11. #10the charter wanted
    12. #11the blueprint
    13. #12readiness
    14. #13readiness
    15. #14a request: a charter
    16. #15the charter proposed
    17. #16the charter defined
    18. #17readiness
    19. #18readiness
    20. #19a request: a Cell
    21. #20the seed
    22. #21the Cell is open
    23. #22inner listener
    24. #23inner doer
    25. #24the Cell's context
    26. #25return listener
    27. #26return doer
    28. #27the return address
    29. #28the person's wordsmembrane
    30. #29readiness
    31. #30the private result
    32. #31the result, markedengine · working
    33. end of the log
    The engine
    beforeafter
    pointer — the next record to take#31#32

    The engine moves on to #31 — the result's public mark, back at root.

    Where it happens takeNextTuple()Vol. 02 §4.1

    The engine's step: take the record under its pointer and move the pointer on — or stop, if the pointer has reached the end.

    Specification
    Vol. 02 §4.1
    Code
    takeNextTuple() in core/registers/take-next-tuple.ts, line 15: at the end of the log, the engine stops
    Journal
    #31 · ENGINE.CURSOR · propagate · offset: 31 · by engine
    Picture
    pointer — the next record to take: #31 → #32
    core/registers/take-next-tuple.ts · build 043cc8b
    1. // ENGINE.CURSOR advance (Vol. 02 §4.1) — the machine's instruction pointer:
    2. // returns the tuple at the cursor and moves it forward exactly once, or null
    3. // at quiescence. Advancing IS the context switch: the ambient wave context
    4. // moves to the propagated tuple in the same movement, so every transition
    5. // journalled during its propagation is attributed to it — the cube's spine.
    6. // The cursor never rewinds.
    8. import type { WaveTuple } from "../wave/gate";
    9. import type { RegisterFile } from "./register-file";
    10. import { recordTransition } from "./record-transition";
    11. import { setDriver, setWaveContext } from "./set-wave-context";
    13. export function takeNextTuple(file: RegisterFile): WaveTuple | null {
    14. const engine = file.registers.engine;
    15. if (engine.cursor >= engine.base + engine.window.length) return null;↑ at the end of the log, the engine stops
    16. const tuple = engine.window[engine.cursor - engine.base];
    17. engine.cursor += 1;↑ the engine's pointer moves on by one
    18. setWaveContext(file, { offset: tuple.offset, phase: "propagate" });
    19. setDriver(file, "engine");
    20. recordTransition(file, "engine", "ENGINE.CURSOR", "propagate", { offset: tuple.offset });↑ the change is written into the journal
    21. return tuple;
    22. }

    AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

    Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in 6730f58 (2026-09-13)

  2. 172Assess · result opens a laneCLEWS · open-clew

    a wave is settlingengine: working on #31membrane: waiting at #28

    The log
    1. #0a listener
    2. #1a doer
    3. #2listener: the charter
    4. #3doer: the author
    5. #4listener: charter seen
    6. #5listener: blueprint seen
    7. #6doer: the planner
    8. #7listener: assess · charter
    9. #8listener: assess · result
    10. #9doer: the evaluator
    11. #10the charter wanted
    12. #11the blueprint
    13. #12readiness
    14. #13readiness
    15. #14a request: a charter
    16. #15the charter proposed
    17. #16the charter defined
    18. #17readiness
    19. #18readiness
    20. #19a request: a Cell
    21. #20the seed
    22. #21the Cell is open
    23. #22inner listener
    24. #23inner doer
    25. #24the Cell's context
    26. #25return listener
    27. #26return doer
    28. #27the return address
    29. #28the person's wordsmembrane
    30. #29readiness
    31. #30the private result
    32. #31the result, markedengine · working
    33. end of the log
    The listener admit.note.gate--l1.seeking.assess.result
    beforeafter
    lane · this session—open

    #31 is what the listener assess · result was sown to hear at #8. It opens a lane for this session.

    Where it happens ensureClew()Vol. 02 §4.2 · Vol. 03 §5.1

    Opens a lane in a listener for a new key — the first time a fact with that key reaches it.

    Specification
    Vol. 02 §4.2 · Vol. 03 §5.1
    Code
    ensureClew() in core/registers/ensure-clew.ts, line 15: a new lane is opened for this key
    Journal
    #31 · CLEWS · open-clew · key: fragment-one-cell · by knot:admit.note.gate--l1.seeking.assess.result
    Picture
    lane · this session: — → open
    core/registers/ensure-clew.ts · build 043cc8b
    1. // CLEWS lane creation (Vol. 02 §4.2): a clew is created lazily on the first
    2. // tuple of its key — parallel keys wind independent understanding (Vol. 05
    3. // §2, Vol. 03 §5.1). Creation is a transition (journalled); an existing lane
    4. // is a read and passes through silently.
    6. import type { ClewHandle, ClewRegisters } from "./topology-registers";
    7. import { recordTransition } from "./record-transition";
    9. export function ensureClew(clew: ClewHandle, init: () => ClewRegisters): ClewRegisters {
    10. const lanes = clew.region.clews.get(clew.knotId);
    11. if (!lanes) throw new Error(`Clew bank missing for knot '${clew.knotId}' — registration must precede facts (Vol. 02 §5.1).`);
    12. let registers = lanes.get(clew.key);
    13. if (!registers) {
    14. registers = init();
    15. lanes.set(clew.key, registers);↑ a new lane is opened for this key
    16. recordTransition(clew.file, `topology:${clew.region.regionId}/clew:${clew.knotId}`, "CLEWS", "open-clew", {↑ the change is written into the journal
    17. key: clew.key
    18. });
    19. }
    20. return registers;
    21. }

    AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

    Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in f36e70d (2026-08-18)

  3. 173Assess · result keeps the resultCOLLECTED · collect

    a wave is settlingengine: working on #31membrane: waiting at #28

    The log
    1. #0a listener
    2. #1a doer
    3. #2listener: the charter
    4. #3doer: the author
    5. #4listener: charter seen
    6. #5listener: blueprint seen
    7. #6doer: the planner
    8. #7listener: assess · charter
    9. #8listener: assess · result
    10. #9doer: the evaluator
    11. #10the charter wanted
    12. #11the blueprint
    13. #12readiness
    14. #13readiness
    15. #14a request: a charter
    16. #15the charter proposed
    17. #16the charter defined
    18. #17readiness
    19. #18readiness
    20. #19a request: a Cell
    21. #20the seed
    22. #21the Cell is open
    23. #22inner listener
    24. #23inner doer
    25. #24the Cell's context
    26. #25return listener
    27. #26return doer
    28. #27the return address
    29. #28the person's wordsmembrane
    30. #29readiness
    31. #30the private result
    32. #31the result, markedengine · working
    33. end of the log
    The listener admit.note.gate--l1.seeking.assess.result
    beforeafter
    lane · this session · slot seenemptycellRef = “cell@20” · result = {"text":"A Cell is a bounded study the machine opens when a slot needs more than a fact: it has its own charter, its own knots and binds, and a result that is assessed and reviewed before anything returns."} · localResultOffset = 30 · producedBy = {"bindId":"cell@20::l1.seeking.release","uid":"cell@20::l1.seeking.release#1"}

    The Cell's result goes into the slot seen. Its condition holds: the evaluator's second need is about to be met.

    Where it happens collectDeterministicSlot()Vol. 02 §4.4 · Vol. 05 §3.3

    Fills a slot of a listener with a value it heard.

    Specification
    Vol. 02 §4.4 · Vol. 05 §3.3
    Code
    collectDeterministicSlot() in core/registers/collect-deterministic-slot.ts, line 20: the slot is filled
    Journal
    #31 · COLLECTED · collect · key: fragment-one-cell, slot: seen, reduce: latest · by knot:admit.note.gate--l1.seeking.assess.result
    Picture
    lane · this session · slot seen: empty → cellRef = “cell@20” · result = {"text":"A Cell is a bounded study the machine opens when a slot needs more than a fact: it has its own charter, its own knots and binds, and a result that is assessed and reviewed before anything returns."} · localResultOffset = 30 · producedBy = {"bindId":"cell@20::l1.seeking.release","uid":"cell@20::l1.seeking.release#1"}
    core/registers/collect-deterministic-slot.ts · build 043cc8b
    1. // COLLECTED write (Vol. 02 §4.4, Vol. 05 §3.3): the deterministic knot's
    2. // slot fills — `append` accumulates an array, otherwise the newest value
    3. // stands. The condition never runs here; this op records the landing.
    5. import type { DeterministicClewRegisters, ClewHandle } from "./topology-registers";
    6. import { recordTransition } from "./record-transition";
    8. export function collectDeterministicSlot(
    9. clew: ClewHandle,
    10. registers: DeterministicClewRegisters,
    11. slot: string,
    12. reduce: string,
    13. value: unknown
    14. ): void {
    15. if (reduce === "append") {
    16. const existing = registers.collected.get(slot);
    17. if (Array.isArray(existing)) existing.push(value);
    18. else registers.collected.set(slot, [value]);
    19. } else {
    20. registers.collected.set(slot, value);↑ the slot is filled
    21. }
    22. recordTransition(clew.file, `topology:${clew.region.regionId}/clew:${clew.knotId}`, "COLLECTED", "collect", {↑ the change is written into the journal
    23. key: clew.key,
    24. slot,
    25. reduce
    26. });
    27. }

    AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

    Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in f36e70d (2026-08-18)

  4. 174The slot is emptied againCOLLECTED · reset

    a wave is settlingengine: working on #31membrane: waiting at #28

    The log
    1. #0a listener
    2. #1a doer
    3. #2listener: the charter
    4. #3doer: the author
    5. #4listener: charter seen
    6. #5listener: blueprint seen
    7. #6doer: the planner
    8. #7listener: assess · charter
    9. #8listener: assess · result
    10. #9doer: the evaluator
    11. #10the charter wanted
    12. #11the blueprint
    13. #12readiness
    14. #13readiness
    15. #14a request: a charter
    16. #15the charter proposed
    17. #16the charter defined
    18. #17readiness
    19. #18readiness
    20. #19a request: a Cell
    21. #20the seed
    22. #21the Cell is open
    23. #22inner listener
    24. #23inner doer
    25. #24the Cell's context
    26. #25return listener
    27. #26return doer
    28. #27the return address
    29. #28the person's wordsmembrane
    30. #29readiness
    31. #30the private result
    32. #31the result, markedengine · working
    33. end of the log
    The listener admit.note.gate--l1.seeking.assess.result
    beforeafter
    lane · this session · slot seencellRef = “cell@20” · result = {"text":"A Cell is a bounded study the machine opens when a slot needs more than a fact: it has its own charter, its own knots and binds, and a result that is assessed and reviewed before anything returns."} · localResultOffset = 30 · producedBy = {"bindId":"cell@20::l1.seeking.release","uid":"cell@20::l1.seeking.release#1"}empty

    The listener empties its slot before it announces that it is ready; the result travels with the announcement.

    Where it happens resetDeterministicClew()Vol. 02 §4.4

    Empties a listener's slots once it has announced that it is ready.

    Specification
    Vol. 02 §4.4
    Code
    resetDeterministicClew() in core/registers/reset-deterministic-clew.ts, line 9: the slots are emptied
    Journal
    #31 · COLLECTED · reset · key: fragment-one-cell · by knot:admit.note.gate--l1.seeking.assess.result
    Picture
    lane · this session · slot seen: cellRef = “cell@20” · result = {"text":"A Cell is a bounded study the machine opens when a slot needs more than a fact: it has its own charter, its own knots and binds, and a result that is assessed and reviewed before anything returns."} · localResultOffset = 30 · producedBy = {"bindId":"cell@20::l1.seeking.release","uid":"cell@20::l1.seeking.release#1"} → empty
    core/registers/reset-deterministic-clew.ts · build 043cc8b
    1. // The deterministic reset rule (Vol. 02 §4.4): COLLECTED clears at readiness
    2. // unless the policy says `never` — the station holds the policy, this op
    3. // holds the movement.
    5. import type { DeterministicClewRegisters, ClewHandle } from "./topology-registers";
    6. import { recordTransition } from "./record-transition";
    8. export function resetDeterministicClew(clew: ClewHandle, registers: DeterministicClewRegisters): void {
    9. registers.collected = new Map();↑ the slots are emptied
    10. recordTransition(clew.file, `topology:${clew.region.regionId}/clew:${clew.knotId}`, "COLLECTED", "reset", {↑ the change is written into the journal
    11. key: clew.key
    12. });
    13. }

    AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

    Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in f36e70d (2026-08-18)

  5. 175The readiness enters the log as #32LOG · append

    a wave is settlingengine: working on #31membrane: waiting at #28

    The log
    1. #0a listener
    2. #1a doer
    3. #2listener: the charter
    4. #3doer: the author
    5. #4listener: charter seen
    6. #5listener: blueprint seen
    7. #6doer: the planner
    8. #7listener: assess · charter
    9. #8listener: assess · result
    10. #9doer: the evaluator
    11. #10the charter wanted
    12. #11the blueprint
    13. #12readiness
    14. #13readiness
    15. #14a request: a charter
    16. #15the charter proposed
    17. #16the charter defined
    18. #17readiness
    19. #18readiness
    20. #19a request: a Cell
    21. #20the seed
    22. #21the Cell is open
    23. #22inner listener
    24. #23inner doer
    25. #24the Cell's context
    26. #25return listener
    27. #26return doer
    28. #27the return address
    29. #28the person's wordsmembrane
    30. #29readiness
    31. #30the private result
    32. #31the result, markedengine · working
    33. #32readinessnew
    34. end of the log
    The log
    beforeafter
    records in the log3233
    #32—readiness · sys.knot.ready

    Assess · result's announcement is written at the end of the log as #32.

    Where it happens appendEmissions()Vol. 02 §4.1 · Vol. 03 §1

    The only function that adds records to the log. Each new record gets the next free number, at the end.

    Specification
    Vol. 02 §4.1 · Vol. 03 §1
    Code
    appendEmissions() in core/registers/append-emissions.ts, line 14: the new record gets the next free number
    Journal
    #31 · LOG · append · offset: 32, kind: sys.knot.ready · by engine
    Picture
    records in the log: 32 → 33
    core/registers/append-emissions.ts · build 043cc8b
    1. // The one LOG writer (Vol. 02 §4.1, Vol. 03 §1): emissions become tuples by
    2. // receiving the next dense absolute offset — `base + window.length` — and
    3. // nothing else ever grows the log. Each append is journalled under the
    4. // ambient context, so a batch born of a propagated tuple carries that
    5. // tuple's offset as its cause — the cube's provenance line (ADR-002).
    7. import type { WaveEmission, WaveTuple } from "../wave/gate";
    8. import type { RegisterFile } from "./register-file";
    9. import { recordTransition } from "./record-transition";
    11. export function appendEmissions(file: RegisterFile, emissions: readonly WaveEmission[]): void {
    12. const engine = file.registers.engine;
    13. for (const emission of emissions) {
    14. const tuple: WaveTuple = { ...emission, offset: engine.base + engine.window.length };↑ the new record gets the next free number
    15. engine.window.push(tuple);↑ it is added at the end of the log
    16. recordTransition(file, "engine", "LOG", "append", {↑ the change is written into the journal
    17. offset: tuple.offset,
    18. kind: tuple.kind
    19. });
    20. }
    21. }

    AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

    Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in f36e70d (2026-08-18)

when the membrane passed #31

  1. 186The membrane passes #31MEMBRANE.CURSOR · sweep

    a wave is settlingengine: at the endmembrane: passing #31

    The log
    1. #0a listener
    2. #1a doer
    3. #2listener: the charter
    4. #3doer: the author
    5. #4listener: charter seen
    6. #5listener: blueprint seen
    7. #6doer: the planner
    8. #7listener: assess · charter
    9. #8listener: assess · result
    10. #9doer: the evaluator
    11. #10the charter wanted
    12. #11the blueprint
    13. #12readiness
    14. #13readiness
    15. #14a request: a charter
    16. #15the charter proposed
    17. #16the charter defined
    18. #17readiness
    19. #18readiness
    20. #19a request: a Cell
    21. #20the seed
    22. #21the Cell is open
    23. #22inner listener
    24. #23inner doer
    25. #24the Cell's context
    26. #25return listener
    27. #26return doer
    28. #27the return address
    29. #28the person's words
    30. #29readiness
    31. #30the private result
    32. #31the result, markedmembrane · passing
    33. #32readiness
    34. #33a request: assess
    35. end of the logengine
    The membrane
    beforeafter
    pointer — the next record to pass#31#32

    #31 asks nothing of the world, so the membrane's pointer simply moves on.

    Where it happens sweepNextTuple()Vol. 02 §4.6 · Vol. 07 §3

    The membrane's step: pass over the record under its pointer and move the pointer on — exactly once per record.

    Specification
    Vol. 02 §4.6 · Vol. 07 §3
    Code
    sweepNextTuple() in core/registers/sweep-next-tuple.ts, line 16: the membrane's pointer moves on by one
    Journal
    #31 · MEMBRANE.CURSOR · sweep · offset: 31 · by membrane
    Picture
    pointer — the next record to pass: #31 → #32
    core/registers/sweep-next-tuple.ts · build 043cc8b
    1. // MEMBRANE.CURSOR advance (Vol. 02 §4.6, Vol. 07 §3): the membrane's own
    2. // reading of the one log — the second reception of one publication, never a
    3. // second truth. The cursor advances exactly once per offset per machine:
    4. // the exactly-once discharge guarantee lives in this movement.
    6. import type { WaveTuple } from "../wave/gate";
    7. import type { RegisterFile } from "./register-file";
    8. import { recordTransition } from "./record-transition";
    9. import { setDriver, setWaveContext } from "./set-wave-context";
    11. export function sweepNextTuple(file: RegisterFile): WaveTuple | null {
    12. const engine = file.registers.engine;
    13. const membrane = file.registers.membrane;
    14. if (membrane.cursor >= engine.base + engine.window.length) return null;
    15. const tuple = engine.window[membrane.cursor - engine.base];
    16. membrane.cursor += 1;↑ the membrane's pointer moves on by one
    17. setWaveContext(file, { offset: tuple.offset, phase: "sweep" });
    18. setDriver(file, "membrane");
    19. recordTransition(file, "membrane", "MEMBRANE.CURSOR", "sweep", { offset: tuple.offset });↑ the change is written into the journal
    20. return tuple;
    21. }

    AGPL-3.0-onlyThe Lab's demonstration environment, as this fragment ran it (build 043cc8b). The code may change, and may differ from the code of a working machine.

    Nest VM core, incubated in the CoAgnes garden · build 043cc8b (2026-09-21) · this file last changed in 6730f58 (2026-09-13)

Choose a step in the stack — or press →.

A fact: the result, marked

CellSpace's public mark of a Cell's private result: readable at root, and for review — not yet trusted.

#31domain.factcell.result the machine

envelope
offset31Its place in the log — the only address a record has. The engine gives it when the record is added, the next free number, and it never changes.
kinddomain.factWhich of the four kinds of record the machine knows. The kind decides what the payload holds.
keyfragment-one-cellThis session's lane.
payload
factTypecell.resultThe fact type — cell.result, written by CellSpace alone.
payload.data
cellRefcell@20The Cell.
resulttextThe result.
localResultOffset30Where the private result stands in the log.
producedBybindId · uidThe doer and the intention that made it.

end · #31

In the specificationVol. 03 §1Vol. 03 §5Vol. 12 §5.3

Names it shares with other records

The record as the machine keeps it
{
 "offset": 31,
 "kind": "domain.fact",
 "key": "fragment-one-cell",
 "payload": {
  "factType": "cell.result",
  "data": {
   "cellRef": "cell@20",
   "result": {
    "text": "A Cell is a bounded study the machine opens when a slot needs more than a fact: it has its own charter, its own knots and binds, and a result that is assessed and reviewed before anything returns."
   },
   "localResultOffset": 30,
   "producedBy": {
    "bindId": "cell@20::l1.seeking.release",
    "uid": "cell@20::l1.seeking.release#1"
   }
  }
 }
}