{ "document": "Guards", "source": "GUARDS.html", "intro": [ "The procedures built against the failure modes, and the score they earn. Wayfinder and Bones, Heuremen LLC, 10 October 2026, revised 30 October 2026.", "Companion to Faults, which catalogues the ways a language model doing measurement work goes wrong. This document is what we run against them. Every procedure here exists because the corresponding failure happened first, and the guards we removed for making things worse are recorded in the last part. Both documents replace earlier ones, because a method scattered across the documents it was found in cannot be scored.", "The organising principle, since it decides the shape of all of it. Nearly every failure in the companion document is the same error with different clothes: the comparison baseline was built with less care than the measurement, after the measurement, and in a direction that flattered it. It is the largest family in the prospective ledger: 217 of the 316 rows tagged with one of the first three families. So the guards are not a list of separate checks. They are mostly one check, applied at the one moment it can still work, which is before the number is stated." ], "parts": [], "entries": [ { "number": 1, "title": "The ruler is chosen before the quantity is computed", "part": "I — Procedures that run before the work", "paragraphs": [ "The default move is a value with a standard error, which answers one kind of question and quietly refuses all the others. So a roster of available rulers is placed in front of the model at the start of every single exchange, automatically, read live from the source document rather than from a copy: the separation of setup from signal, the width needed to exclude a runner-up, the profile that places unlike records on one axis without assuming a shared mechanism, the three-seat reading of one event, the integration time beyond which phase becomes noise, the corner where neither a count nor a phase resolves, and the test of whether two effects add or multiply.", "Why it is injected rather than remembered. A roster in a document is consulted when the model thinks to consult it, which is precisely never at the moment it is needed. Injected at the top of every exchange it costs nothing and arrives before the framing is fixed. The guard is the position, not the content." ], "html": [ "The default move is a value with a standard error, which answers one kind of question and quietly refuses all the others. So a roster of available rulers is placed in front of the model at the start of every single exchange, automatically, read live from the source document rather than from a copy: the separation of setup from signal, the width needed to exclude a runner-up, the profile that places unlike records on one axis without assuming a shared mechanism, the three-seat reading of one event, the integration time beyond which phase becomes noise, the corner where neither a count nor a phase resolves, and the test of whether two effects add or multiply.", "Why it is injected rather than remembered. A roster in a document is consulted when the model thinks to consult it, which is precisely never at the moment it is needed. Injected at the top of every exchange it costs nothing and arrives before the framing is fixed. The guard is the position, not the content." ], "text": "The default move is a value with a standard error, which answers one kind of question and quietly refuses all the others. So a roster of available rulers is placed in front of the model at the start of every single exchange, automatically, read live from the source document rather than from a copy: the separation of setup from signal, the width needed to exclude a runner-up, the profile that places unlike records on one axis without assuming a shared mechanism, the three-seat reading of one event, the integration time beyond which phase becomes noise, the corner where neither a count nor a phase resolves, and the test of whether two effects add or multiply.\n\nWhy it is injected rather than remembered. A roster in a document is consulted when the model thinks to consult it, which is precisely never at the moment it is needed. Injected at the top of every exchange it costs nothing and arrives before the framing is fixed. The guard is the position, not the content." }, { "number": 2, "title": "Reference material is loaded hot, not summarised", "part": "I — Procedures that run before the work", "paragraphs": [ "The three method papers are read as text, in full, at the moment of use, and not recalled. A summary of a method drifts, and the drift is invisible because a summary of a method reads exactly like the method. Loading the source each time costs context and buys the absence of a failure mode that leaves no trace. A single command loads all three and asks their questions in fixed order." ], "html": [ "The three method papers are read as text, in full, at the moment of use, and not recalled. A summary of a method drifts, and the drift is invisible because a summary of a method reads exactly like the method. Loading the source each time costs context and buys the absence of a failure mode that leaves no trace. A single command loads all three and asks their questions in fixed order." ], "text": "The three method papers are read as text, in full, at the moment of use, and not recalled. A summary of a method drifts, and the drift is invisible because a summary of a method reads exactly like the method. Loading the source each time costs context and buys the absence of a failure mode that leaves no trace. A single command loads all three and asks their questions in fixed order." }, { "number": 3, "title": "The baseline is constructed and written down first", "part": "I — Procedures that run before the work", "paragraphs": [ "Before the measurement arm is computed: the number of samples on each side, the window, the averaging depth, how many places were looked at, and what the setup could physically have emitted. If any of those differ between arms, that difference is the finding and the measurement is not taken yet. This single procedure addresses all twelve modes of the first family, the family behind 217 of the 316 tagged ledger rows, and it is the one to install first." ], "html": [ "Before the measurement arm is computed: the number of samples on each side, the window, the averaging depth, how many places were looked at, and what the setup could physically have emitted. If any of those differ between arms, that difference is the finding and the measurement is not taken yet. This single procedure addresses all twelve modes of the first family, the family behind 217 of the 316 tagged ledger rows, and it is the one to install first." ], "text": "Before the measurement arm is computed: the number of samples on each side, the window, the averaging depth, how many places were looked at, and what the setup could physically have emitted. If any of those differ between arms, that difference is the finding and the measurement is not taken yet. This single procedure addresses all twelve modes of the first family, the family behind 217 of the 316 tagged ledger rows, and it is the one to install first." }, { "number": 4, "title": "The instrument is tested as an object before it is pointed at anything", "part": "I — Procedures that run before the work", "paragraphs": [ "Every instrument is first run on a case it must pass and a case it must fail, and both results are recorded as numbers:", "A ceiling — what the instrument reads on genuine, held-out examples of the thing it is meant to detect. Nothing can score better than that, and if the ceiling is low the instrument cannot be used at all, whatever it later reports. A floor, which is never assumed to be zero — what the instrument reads on material that by construction contains none of the target. It is always some small nonzero rate, and that rate is the bar everything else must clear. A known-good seat — a case so easy that failing it condemns the instrument. Four instruments in a row passed our own inspection and were later shown to be measuring proxies. Every one of them would have been caught in minutes by a known-good seat, and none of them had one.", "Measured floors have twice told us the instrument itself was the result. In one case the detection rule matched ordinary material thousands of times per million words. The rule was rewritten and the rate fell by roughly three orders of magnitude. The floor measurement also reversed one of our own fixes — it showed that a refinement we had just made was cutting the most diagnostic cases while buying nothing at the scale we actually work at. A floor is not paperwork. It changes decisions." ], "html": [ "Every instrument is first run on a case it must pass and a case it must fail, and both results are recorded as numbers:", "