Consider an SME that wants its sales team to stop losing accounts quietly. The workflow proposed is simple to state: produce a weekly list of customers who have passed their usual reorder cycle and are worth a call. Management is interested but has been burned by a previous AI project that demoed well and never shipped.
Week one. Read-only credentials to the ERP database, confirmed working on day three — which is fast, and often the item that slips. Scope is written down to one page: this list, for these account types, on this cadence. Then the part most projects skip. A sales manager is asked what makes an account genuinely worth calling, and the answer turns out to be more specific than "hasn't ordered lately". The threshold is set: of the accounts flagged, a defined majority must be ones the manager agrees are worth a call.
Week two. The workflow is built against live records from day one. The data misbehaves in the way real data does — the same customer exists three times under slightly different names, and seasonal accounts look lapsed every year without being lapsed. Both are documented as findings rather than smoothed over, because both would have derailed a production rollout later.
Week three. A case set is drawn from real accounts, and the manager marks each one as worth calling or not, without seeing what the system decided. The workflow runs across the set and the result is compared to the threshold. Some flagged accounts are wrong, and the reasons are examined individually — that examination is usually more useful than the headline number, because it tells you whether the errors are fixable or fundamental.
The decision. The evidence supports one of three answers: proceed to production, proceed after fixing a specific named problem, or stop. All three are acceptable outcomes of a sprint. Only the last one is expensive to discover any other way.
The point of this scenario is the sequence, not the numbers: get access first, define correct before building, then let real data decide. It is deliberately the opposite of building for six months and evaluating at the end.