§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.