The reasons

The most remarkable chapter of the 1446 book is the one that explains why: why ㄱ (g) is shaped like the root of a tongue blocking a throat, why the vowels build from three primitives. For five hundred years that chapter was lost, and the world had the letters but not the reasons; only in 1940 did a surviving copy resurface. The letters worked the whole time. But a system whose reasons are lost cannot be extended, only used.

This part is gog’s reasons, shipped with the artifact on purpose. The nine laws the package never breaks, each with the temptation it exists to refuse. Why the engine says no when it does, and why every refusal comes with a direction. None of it is required to use gog: Parts I through IV never lean on it. It is here for the moment you want to know why the grammar is shaped the way it is, or want to predict what it will do in a case no chapter covers.

The laws share one enemy, and it is worth naming before you read them: the expert’s shortcut, the saved keystroke that costs the beginner a rule.