Outcomes, measured from telemetry
Every step of every session emits an event; these numbers are aggregated from that stream — not asserted. The figure that matters for trust is wrong content blocked rising while wrong chemistry shipped stays at zero.
Engagement
No sessions recorded yet. Run a few sessions in the student app (or the demo) and reload — the numbers populate live.
Definitions — effort reduction: 1 − (fixes served + retrieval checks) ÷ re-teaching the whole unit. Wrong content blocked: diagnoses/claims refused by the verification gate before reaching a student (auditable). Wrong chemistry shipped: ungrounded interventions served to a student — structurally zero by construction.