§06 · charts & Impact Cards · design.md §5

The house chart is the calibration curve.

Forecast probability against observed frequency, with the diagonal drawn. It's the hero chart of the raise and it should be treated as a brand asset with a fixed rendering.

as_of 2026-08-10
0.0 0.5 1.0 0.0 0.5 1.0 forecast probability observed frequency n = 460 · Brier = 0.041 as_of 2026-08-10

Rules for all charts

  • Axes always labeled with units and as_of. No exceptions.
  • Uncertainty is drawn, not implied. Quantile fans (p10/p25/p50/p75/p90), not a single line.
  • n is always visible. A base rate without its sample size is a naked point estimate in chart form.
  • Silence renders as an empty cell with a –, never as zero. Conflating "no observable action" with "zero" is the exact error the scorecard spec warns about.
  • Sparse gridlines, no chart junk, no 3D, no donuts, no dual axes.

Silence, rendered correctly

AgencyComment periodFinal rule
CMS61 days OBSERVED
USDA
HUD45 days PENDING

USDA's row is silent, not zero — no observable action of any kind, rendered as a dash, not a blank that could be misread as "checked and found nothing."

Impact Cards

The programmatic share unit. Fixed frame, and the frame is the brand. Layer 1 facts only — which means an Impact Card carries no status hue.

mechanism · delegation

§ 71101(a)(2) requires HUD to issue an implementing rule within 180 days of enactment.

us/119-hr-1-enr/divB/titVII/sec71101/a/2 · enr · as_of 2026-08-10 · seedownstream.com

1200×630 (OG) and 1080×1080. Ink ground, ochre mono eyebrow naming the mechanism type, serif headline as one citable sentence (max 2 lines), and the mandatory mono footer strip — provision_id · bill_version · as_of · seedownstream.com. Nothing above the footer carries a status hue: this is a fact, not a forecast.