# Why forty days

[[lore/long-count]] is forty days. Nobody wrote down why, and the number is
never justified in any surviving document — it appears fully formed in the
earliest attestation and is treated as given.

That is odd for a group that measured things professionally and published
forty-odd pages of frequency tables with per-reading error bars. These were not
people who took numbers on faith.

## The four candidates

**The dull one.** Forty is what you say when you mean *a lot of days and a round
figure*. It has meant approximately that in English for a very long time, and a
craftsman inventing an endurance convention over a beer would land on it without
consulting anything.

Probably correct. It requires no source, explains the absence of justification
completely, and is the only candidate consistent with the number appearing
already fully formed.

**The plant one.** A billing or maintenance cycle at [[lore/cordell]] of roughly
this length, making forty days the interval after which something on the route
was reviewed. This would be a satisfying answer and there is no evidence for it:
no Cordell schedule of forty days has been produced, and people have looked.

**The equipment one.** That forty days was the practical limit of something —
a battery, a paper roll, a log book. Same problem: nobody has produced the
equipment or the specification, and the versions that circulate name different
equipment.

**The borrowed one.** That it came in from outside, from any of the several
traditions in which forty days is a period of trial. Ossuary raised this on
[[lore/dead-letter]] and then argued against it himself, on the grounds that
nothing else in the Loop's practice shows that kind of borrowing and a single
imported number with no accompanying vocabulary is implausible.

## The argument the number caused

Whatever its origin, forty days is the thing eleven years were spent on — see
[[lore/halberd-and-ossuary]].

Not the number. Nobody ever disputed forty. The dispute was entirely about
whether an interruption resets it, which is a question about what the Count
*measures*: endurance, in which case an interruption you did not cause is
irrelevant, or continuity, in which case it is fatal.

[[lore/nailhouse]] held continuity, without arguing. [[lore/dead-letter]] held
endurance, at length. The [[lore/armistice-banner]] resolves it by declining to
adjudicate — *forty days is forty days on any clock* — which concedes nothing
about doctrine and everything about whose roster counts.

## Why nobody settled the origin

Because the tradition is, on the whole, not very interested.

Attempts to establish it come almost entirely from the second generation
described in [[lore/after]] — people who arrived expecting a system and found an
etiquette, and who reached for the number as the place a system might be hiding.

The insiders' position, where it is recorded at all, is closer to Halberd's line
about the Count itself: it is forty days or it is not forty days. A convention
does not become better founded by having a pedigree, and asking where a number
came from is, in this tradition, faintly the wrong question — the sort of thing
[[lore/lexicon|cold]] in the fourth sense was invented to describe.