Cumulative (A−D)/(A+D) breadth lab
Choose an evidence scenario, step through 20 synthetic sessions, and observe that the line is published only when every session is causally resolved.
Transport
Teaching stage
Daily denominatorA + D (movers)
Immutable seed0
Immutable scale100
Path withheld
Resolve the evidence state before publishing a cumulative value.
Preview: seed before session 10 / 20
Synthetic audit trace
| Session | A | D | A+D | Ratio | Scale × ratio | Line or state |
|---|
All scenario data are synthetic. Non-resolved scenarios may show diagnostic daily arithmetic, but every cumulative cell is withheld. Display values are rounded only after the recurrence.