Declarations are photographs

Every fact on your street map was true the day you wrote it down. The generator started on the second pull. The pantry ran three weeks deep. Maria said "obviously, call me anytime," and meant every word. True, true, true — last October.

But streets aren't photographs; they're weather. Untreated gasoline starts degrading in a matter of months. A deep pantry gets eaten by ordinary Tuesdays and never quite refilled. Maria absolutely would still pick up at 2am — but she changed her number in March, and the one saved in your phone now rings in a drawer in her old apartment. Nothing dramatic happened to your readiness. Time happened. And a map that doesn't account for time doesn't describe your street; it describes a street that used to exist.

The walk-around

So, the ritual: once a season — every 90 days, give or take a weekend — walk your declarations. One hour. Everything you have ever claimed on your street page gets physically revisited with three questions: Is it still here? Does it still work? Would I still share it?

The equipment half is pleasantly mechanical:

• Pull the generator's cord. Not "look at the generator" — start it, and let it run ten minutes under a real load.
• Check the dates on the stored water; rotate the oldest jugs into the garden.
• Open the first-aid kit. The ibuprofen expired in January. It always has.
• Count the pantry in honest weeks — the way it actually is after the holidays got into it, not the way it was the day you stocked it.
• Turn the walkie-talkies on. Dead batteries in a drawer are décor, not communications.
• Read the date on the fuel can. Gasoline you can't remember buying is gasoline you can't count on.

The relational half is the part people skip, and it's the part that matters more. Your three — the neighbors you'd call at 2am — get re-asked, not silently re-assumed. Not an interrogation; a text: "Still on for being each other's 2am people?" Better, a knock and two minutes on a porch. If the answer is a warm "obviously," you have just re-poured a foundation. If the answer is a pause — good. That's the walk-around working. Do the same for the practices: the standing mutual-aid pact, the group thread you tend. Agreements go stale even faster than gasoline, and much more quietly.

The score fades on purpose

Here is the part of Terrarium that raises the most eyebrows, and that we will defend to the last line of code: the map dims what you don't re-affirm, by design. In the Readiness Score, each of your named three carries a freshness factor that decays the longer you go without re-affirming them — down to about a third of full weight after 90 days untouched. In the constellation, the confidence behind your declared facts fades the same way: leave the sky alone for a year and it will honestly, accurately dim on you. Not as punishment. Not as an engagement mechanic begging you to open an app. Because the map insists on describing the actual street, and staleness is a fact about the street. The mechanics are documented plainly in how the score works; the philosophy fits in one sentence: a fact you won't re-check is a memory, and the sky doesn't render memories as stars.

This is why your street page keeps a "Still true?" strip. Anything unaffirmed long enough to start dimming gets surfaced there with exactly two buttons: Still true and Not anymore. Both buttons keep the sky honest. Read that again, because it is the least app-like sentence we know how to write: this system rewards you for deleting things.

"Not anymore" is a gift

Confirming feels good. Disconfirming feels like losing points — and it is, literally, losing points. It is also the single most valuable thing the walk-around produces. The generator that won't start, discovered on a calm Saturday in October, is a repair errand and a mildly annoying afternoon. The same discovery made during an ice storm is the plot of a very bad night. Every "not anymore" is a gap found while gaps are cheap.

Honesty as maintenance runs both directions, too. Retracting the pantry claim you can no longer back isn't an admission of failure; it's the act that makes your street's remaining lights trustworthy. Fog on the map is information. An honest 61 your street can plan around beats a flattering 84 it can't, because the whole value of the map is realized on exactly the night you need it to be true.

Make it a season

Rituals survive by attaching themselves to time that already exists, so bolt this one to the calendar's own joints: the solstices and equinoxes, or the same weekends you change the smoke-alarm batteries. Four walk-arounds a year, one hour each. If your street has started sharing gear — and after an afternoon of mapping it usually does — a Resource Sharing Calendar turns the private ritual communal: the ladder, the dehydrator, and the carpet cleaner all come home the same weekend, get checked, get re-declared, and go back into circulation with their claims refreshed.

Then the ceremony itself, which takes less time than describing it: walk the house, press "still true" on what's true, press "not anymore" on what isn't, and text your three. One hour a season to keep the sky telling the truth. Streets that do this are never surprised by their own map — which, on the night it matters, is the entire point of having one.