This shows a responsive process that names the one regulator still standing. It does not show a mind, a want or a prediction, and a job display that updates after a fitting changes would do exactly this. The rival is now "a pending-job board that reads the fittings."
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**Second act: answer without touching anything.** The player unclips R3's plate, the B-line about R3, and seats it in the reply face. Nothing in the room changes. A new line appears: the berth token, R3's token, B. The line that named R3 stops being marked as current, and stays that way until the player next enters the gallery. Seating any other plate, or a plate from elsewhere, produces nothing.
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**Second act: answer without touching anything.** The player unclips R3's plate, the B-line about R3, and seats it in the reply face. Nothing in the room changes. A new line appears: the berth token, R3's token, B. The line that named R3 stops being marked as current. Seating any other plate produces nothing.
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That is the observation that separates the two rivals as far as this scene can: a board that reads fittings does not answer a plate, and here the words changed because words were given, with the world untouched. The process takes utterances as input and changes what it says next. Operationally, the player has found an exchange: a thing that asks, is acted on or answered, and asks again or stops. This context is borrowed from the exchange candidate because it earns its cost: one reply face and three authored responses, and without it the gallery cannot tell a board from a correspondent.
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**The reply rule, stated once.** The reply face holds one plate. It answers only a B-plate whose fitting token matches the line currently marked, and it answers it once: one acknowledging line per fitting, ever. An A-plate, a plate naming another fitting, or a plate carried in from elsewhere produces nothing and can be taken back. While the plate stays seated the deferral holds and nothing further is written; unclipping it makes the existing line current again without writing a new one, and seating it again restores quiet silently. Completed work draws the next line whether or not it was deferred, and once no intact regulator remains nothing more is written. There is no rewriting of plates and no validator: the face reacts to which plate is in it and which line is current, nothing else.
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**What the player can now predict, and do differently.** At any later panel that carries a current A-line naming a fitting, the player can predict that doing the named work produces the next line, that seating the fitting's B-plate produces an acknowledgement and quiet, and that anything else produces nothing. So they can defer an ask without disabling a room, or do the work to see what is asked next. Before the gallery, the lines were a ledger and there was nothing to do. After the scar, an A-line beside untouched work is somewhere to go and look. After the reply, the last line at the seals, addressed to the berth and naming the seal controls, is something the player can answer, defer or ignore, and can also close for practical reasons without reading a word, as the story page already allows.
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That is the observation that separates the two rivals as far as this scene can: a display driven only by regulator state does not answer a plate, and here the words changed because words were given, with the world untouched. What it does not rule out is a job board that also takes manual command input; the player cannot tell a correspondent from a console, and the scene does not claim to. Operationally, the player has found an interaction protocol: a thing that names work, is acted on or answered, and names the next work or goes quiet. This context is borrowed from the exchange candidate because it earns its cost: one reply face and three authored responses, and without it the gallery cannot tell a state display from anything that answers.
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**What the player can now predict, and do differently.** At a later panel that carries a current A-line naming a fitting, the gallery supports a prediction to investigate, not a guarantee: that doing the named work draws the next line, that seating the fitting's B-plate draws an acknowledgement and quiet, and that anything else draws nothing. So they can defer an ask without disabling a room, do the work to see what is named next, or simply ignore it. Before the gallery, the lines were a ledger and there was nothing to do. After the scar, an A-line beside untouched work is somewhere to go and look. After the reply, the last line at the seals, addressed to the berth and naming the seal controls, is something the player can answer, defer or ignore, and can also close for practical reasons without reading a word, as the story page already allows.
**What honestly remains.** Whether A is "do", "next" or "will", and whether B is "no" or "not now": the player has learned the force of two endings in one exchange, not their meaning. The berth token is a modest cue that the address means whoever is at the berth; it does not prove the writer knows the astronaut, and a token absent from the player's records is not absent from the station. A responsive process is not shown to be alive. What the line feeds and why anyone wants the regulators down belongs to the story.
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**Consequences and retained work.** Pulling R3 first: the next line names R4 and nothing acknowledges R3, which leaves B less tested; stated as a cost. Seating R4's plate before pulling it: acknowledgement and quiet, R4 intact, nothing lost. Dying after a completed pull or a seated plate: both persist, and the gallery is one room, so a shift moves it whole. Missing the scar, the plates or the panel: the regulators still yield parts, the seals still close by hand, and no basic interaction is gated on reading. Plates can be unclipped again; nothing here is one-way except the crimps.
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**Consequences, run through the rule.** *R4 first:* the next line names R3, and seating R3's B-plate is the valid reply. *R3 first:* R3 was not the named work, so nothing is written for it; pulling R4 afterwards finds no intact regulator to name, so nothing more is written, and B goes less tested; stated as a cost. *Ignoring R4:* the line stays current and nothing happens; R4's own plate is an A-plate and draws nothing if seated, which is fine, since a player may simply not answer. *Invalid replies:* R1's or R2's A-plates, or a plate carried in from elsewhere, draw nothing. *Death and return:* completed pulls, a seated plate and every written line persist as finished work and placed objects, and the gallery is one room, so a shift moves it whole; re-entering writes nothing by itself. A plate found still seated on return keeps its deferral; unclip it and the same line is current again. *Missing the scar, the plates or the panel:* the regulators still yield parts, the seals still close by hand, and no basic interaction is gated on reading. Plates can be unclipped again; nothing here is one-way except the crimps.
**Journal and help.** Capture and plate-seating are world time; comparison and notes are paused, as the owner requires. The journal records stills and the control's visible state; it never labels a line, grades a note or announces a translation. Yeva can truthfully say the crew never touched the regulators and found the pulled ones pulled, and that the panel has more lines than she remembers. That is weaker evidence than seeing a line appear, and the scene never depends on it; she reads neither hand and says so.
@@ 52,7 54,7 @@
| Ambiguous observation | A/B correlation plus one unanswered A | Phrase followed by a closing shutter |
| Discriminating context | Scar dates words before the pull; a seated plate changes the text with the world untouched | Crossed traces: same phrase, two responses; swapped sender |
| Player's own act as evidence | Yes, twice | On the practice circuit only |
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| Rival left standing | "Next" or "will" rather than "do"; a scheduler rather than a wanter | Permission, obligation or preference; grammar |
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| Rival left standing | "Next" or "will" rather than "do"; a console with manual input rather than a correspondent | Permission, obligation or preference; grammar |
| Content cost | Plates, one reply face, three authored responses, one crimp clue, a berth token cue | Trace device, four to six traces, practice circuit, two shutters |
| Main risk | New line missed without the before still; scar read as damage | Feels like a linguistics lesson; device becomes an answer oracle |
@@ 62,4 64,4 @@
## Author self-check
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The scar dates the words before that pull only, and the crimp is an authored clue, not a general property. "Only A" means only in the player's records. A token never recorded is not a token proven absent, and the berth cue makes the address probable, not certain. Text that answers is a responsive process, not a living writer; Yeva's memory is weaker than a witnessed change. A status board could update after a pull, which is why the plate is the decisive act, and even so the player learns an operational interaction and not a speech act. Every mistake keeps work; no escape interaction needs a reading. Nothing here establishes fun, comprehension or authoring cost; later authorised observation would test whether players who pulled R4 return to the panel unprompted, and whether they describe the last line as asking them something.
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The scar dates the words before that pull only, and the crimp is an authored clue, not a general property. "Only A" means only in the player's records. A token never recorded is not a token proven absent, and the berth cue makes the address probable, not certain. Text that answers is a responsive process, not a living writer; Yeva's memory is weaker than a witnessed change. A status board could update after a pull, which is why the plate is the decisive act; the plate rules out a display driven only by regulator state, not a board that also takes manual command input, so the player learns an interaction protocol and not a speech act, and a later panel is a prediction to test, not a guarantee. Every mistake keeps work; no escape interaction needs a reading. Nothing here establishes fun, comprehension or authoring cost; later authorised observation would test whether players who pulled R4 return to the panel unprompted, and whether they describe the last line as asking them something.
