Eight weeks, one model: the shape of a Trust Pilot.

What follows is an illustrative composite: a fictional mid-size organization, a fictional model, and constructed figures chosen to show what an 8-Week Trust Pilot produces. We publish it because buyers reasonably ask what the work looks like before naming their own system — and because the honest alternative to an NDA-bound case study is a labeled illustration, not a disguised one.

The setup: a biomarker-response model, in use for eighteen months, quietly shaping which candidates advance to a confirmatory assay. It has a validation report from before go-live, a champion who built it, and no owner of record. The decision it influences is consequential; the evidence behind it has not been re-examined since deployment.

Weeks 1–2 produce the bounded claim. The working Context of Use turns out to be narrower than anyone had written down: two assay protocols, one compound class, response prediction only — not the potency ranking it had drifted into performing. Writing the exclusions down is the pilot's first deliverable, and frequently its most uncomfortable one.

The pilot's deliverable is not a verdict. It is a boundary you can defend to a reviewer.

Weeks 3–5 test the claim rather than the model. The original comparator was the legacy heuristic the model replaced — inherited, not chosen. Against a defensible comparator on a reconstructed, versioned dataset, the model's advantage narrows from the remembered 'twenty points' to a real but bounded improvement inside its Context of Use — and disappears outside it. Illustrative numbers: a 14-point advantage within the boundary; parity beyond it.

Weeks 6–7 put the system under governance: requests routed through policy, every score written to the tamper-evident ledger with its trace, out-of-boundary requests blocked at runtime rather than discouraged in a memo. The first governed month (illustrative again) blocks a handful of requests — each one a decision that would previously have leaned on evidence that did not cover it.

Week 8 delivers the Trust Record and the value baseline: what the organization now knows, what it measures going forward, and the revalidation triggers — population shift, upstream model update, protocol change — that reopen the question automatically. The pilot's deliverable is not a verdict on the model. It is a boundary you can defend to a reviewer, and the instrumentation that notices when the boundary moves.

A real engagement differs from this illustration in every particular — the system, the comparator, the numbers, the findings. What does not vary is the shape: name the decision, bound the claim, test it honestly, govern it at runtime, and leave behind evidence that outlives the engagement.