Mode 1 · Idle heartbeat
Default state. The signal arc cycles to a new index every time a real compile completes anywhere in the system. The visitor sees Flatland alive in real time. This is the mode you see on every page right now.
The mark
Nine arcs.
One of them lit.
The mark in the corner of every page is a sphere. It is also a live status surface: the lit arc, the signal-orange one, cycles every time a real compile completes anywhere in our infrastructure. On this domain the mark is never static. If you can see it, the system is working.
Why a sphere
In Edwin Abbott's Flatland (1884), the inhabitants live in a two-dimensional plane and cannot imagine a third dimension. Then a Sphere descends into their world and shows the Square what it could never see from inside the plane: that its flat world was only a slice of something larger.
Flatland does the same for a financial model. The spreadsheet is the plane: a flat grid of cells where the real structure, the types, the dependencies, the reasoning, is invisible. Flatland lifts the model out of the grid and shows the dimension the spreadsheet hides. The mark is the Sphere: the higher-dimensional view of your numbers.
Why arcs
A sphere cannot enter a flat world whole. In the book, the Sphere passing through the plane appears only as a circle that swells and shrinks: cross-sections of a shape the flatlanders cannot hold all at once. The nine arcs are that sphere made visible the only way a flat surface can carry it, as a series of slices. One of them is lit. That arc is the live signal: the pulse of a system doing real work.
A mark that's alive
Most logos are finished the moment they're drawn. This one has three live modes, and the lit arc tells you which one the system is in right now.
Mode 2 · Demo state
During the Workshop's compile climax, the arc shifts color to reflect live assertion state. Green when all assertions pass, signal-orange when one or more fail. The mark replaces a separate status indicator.
Mode 3 · Diff tracer
During a propagation animation, the arc walks through the nine positions in the order the diff propagates through the DAG. Arc 0 is the assumption; arc 8 is the output. The arc traces the dependency itself.
The refusal
On flatlandfi.com, the mark in its static frozen state, orange on arc 1 with no motion, does not appear. No favicon-style placement. No footer logo. If the mark is on this domain, it is live and currently working.
Other surfaces: READMEs, social cards, MCP registry listings, business cards, llms.txt headers: may use the static form. The website itself never displays a dead mark.
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© 2026 Flatland · made for systems of record · live pulse · awaiting first compile