*From the site-book:*
> The Loop redirects traffic through interlocking spirals. Design principle: each turning must resemble the last closely enough to be reassuring and differ enough to be unprovable. The visitor's confidence should survive exactly as long as their patience. Geometry laid to the tenth decimal place.
*Marginalia:* you will notice this page resembles the first turning closely enough to be reassuring. That is the design principle, demonstrated on you, with your consent. The differences exist. Counting them is optional.
---
**Town restoration note.** Second of three. The workers here spoke of the hum — a vibration felt in the marrow rather than the ears — and of voices in the corridor wind: not words, but the suggestion of intent. Foss blamed the acoustics. One level remains, and it ends in an open door.