Ankh-Morpork: the city leaves a footprint¶
A city government runs on a stack, and most of that stack announces itself long before anyone knocks. The domains it registers, the clacks addresses it publishes, the guilds it contracts to keep the lamps lit, the mail it sends and the seals it signs with: all of it sits in the open, waiting to be read by anyone patient enough to look. Nothing here needs a lock picked. The Patrician’s clerks filed it themselves.
Public registries, certificate logs, mail records, the names of suppliers who list the city as a reference: each fragment describes a little more of the stack, and together they sketch a shape that no single record intends to reveal.
Lord Vetinari, who would rather learn the city’s weak locks from people he can name than from people he cannot, has posted an invitation on the palace gate. The cleverer hands are welcome to test the city’s own machinery, its clacks, its registries, its counting-houses, and bring him what they find. His clerks keep the ledger. A rattled latch anyone could have counted earns no line in it; a lock actually opened, argued and shown, earns one. The list of what may be touched goes up the same morning for everyone, which makes the first hour a sorting problem as much as a picking one.
Everything here is the reading a careful hand does before that morning: the stack drawn from who supplies the city, and the city cased from the outside, from the pages it serves and the records it keeps. The map is where the interesting questions start; the invitation is what makes them worth asking.
Casing the city
Disclaimer: this is a study of public information about a fictional city. Applying the same reading to a real municipality without the same kind of invitation may cross legal lines, however open the sources appear.