Components

Trace

Trace unfolds how a figure the model produced was built: the formula at each step and every input underneath it, each marked as read from a source or estimated by the model. Replace an estimate with your own figure and everything above it recomputes.

Live specimen

Tap Trace to unfold the forecast. Tap a source to open it. Then use your own figure for occupancy or operating costs and watch every value above it change, with the old value struck beneath.

Anatomy

When to use

  • Any number the model calculated that someone will act on: income, yields, valuations, forecasts, totals.
  • Charts the model built: the same tree explains each series.
  • Not for figures read straight from a source. Those need a source link (Pin, on the Roadmap), not a derivation.

Behaviour

InputLooks likeOffers
ReadInk value, a Read tag, the source and its dateOpen the source at the rows it read
EstimatedPigment value, an Estimated tag, the model’s assumptionUse my figure
YoursInk value, a Yours tag, what the model had estimatedRevert

When an input changes, every calculated value above it recomputes and shows the value it replaced, struck through. The figure at the top still wears pigment: the model calculated it, from inputs you chose.

Best practices

  • Open on the figure, not the tree. Most people check one input; show the whole tree only on request.
  • Write formulas in words: “Area × rent × 12 months × occupancy”.
  • Give every estimate its assumption in one line: “Assumes Level 7 re-lets by June.”
  • Count the mix where the figure sits: “5 inputs · 3 read · 2 estimated”.
DoMark what the model estimated, and why.
Don’tDon’t cite “AI analysis” as a source. It hides which inputs were read and which were guessed.

Accessibility

  • Trace is a disclosure button; the tree is a nested list read in order.
  • Tags say Read, Estimated or Yours in words, not only in colour.
  • A change is announced with its result: “Occupancy set to 90%. Net operating income is now S$20.4M.”

Specifications

Figure
Display face, pigment, tabular figures
Tree
14 px indent per level, 1.5 px connector lines
Changed value
New value above, old value struck in madder at 70%
Unfold
One signal, 420 ms, once
PremiseThe assumptions behind an answer, as chips you can change; only what depends on them is rewritten.ProvenanceShiftTables that show what the model changed since you last looked.ProvenanceProvenanceShow who wrote what, before and after a person accepts it.ReviewAccept, edit or reject what the model drafts, a word or a section at a time.