Tether

Tether keeps every figure the model wrote tied to the data it came from. Change the data and the figure frays: it shows what it said, what the data says now, and asks to be updated or kept as written.

Live specimen

The summary was written from the rent roll at 14:20. Tap a figure to see the cells it reads. Then mark Meridian Bank’s floor as vacant: all three figures fray. Update one, keep another as written.

Anatomy

When to use

  • In any text the model wrote from data that keeps changing: rent rolls, budgets, pipelines, cash positions.
  • In reports that are read days after they were written.
  • For a figure that is calculated in front of people, use Trace.

Behaviour

StateFigurePerson can
TiedStill pigment, tyrian underlineSee the cells it reads
FrayedStruck in ochre, pulses onceUpdate it, or keep it as written
UpdatedRewritten from the data, then still—
KeptLabelled “as of 14:20”, no longer tied—

A fray pulses once when it happens, then rests. The strike and the count stay until someone decides.

Best practices

  • Say when and from what the text was written: “Written at 14:20 from the rent roll”.
  • Show the old and new values side by side before rewriting.
  • Update only the figures that changed, never the whole text.
  • Label a kept figure with its date, so nobody mistakes it for current.
DoShow that a figure is out of date, and what it should be.
Don’tDon’t leave a figure looking current after its data has moved on.

Accessibility

  • Each figure is a button whose name includes its state: “Occupancy: 88%, out of date: the data now says 72%”.
  • Frayed and kept figures differ by strike and label, not only by colour.
  • Data changes announce how many figures are out of date.

Specifications

Tied
1.5 pt tyrian underline at 50%
Frayed
2 pt ochre underline, ochre strike
Pulse
One beat, ochre tint; none under Still
Kept
Mono label “as of” with the time