STR.6:5.3 - Finding a way to explain recurring inspection errors

Suppose a prospective customer needs a qualified explanation of recurring inspection errors, not continuing accountable operation. This is a constructed extension of SensorCo. It stipulates purpose-limited access to local error cases, independently checked acceptable inspection outcomes and some operating records. No diagnostic result or delivery arrangement has yet been obtained.

The team first returns to STR.5: a one-off explanation may answer a different receiving problem. If that contribution is worth exploring, a diagnostic family must be constructed. “Use AI” and “ask an expert” do not explain how the requested result would be obtained.

The team examines its existing service Method. In this teaching case, that Method compares a reading with configured limits and returns an exception; it does not explain why exceptions recur. Searching by the missing result leads to a neighboring fault-investigation Method that compares error and non-error cases under sufficiently similar conditions, then distinguishes rival explanations. The two Method descriptions and their stated limits are stipulated professional inputs, not claims about the effectiveness of any real diagnostic product.

Following the neighboring Method on the available local material exposes a missing connection. Timestamps do not establish whether two inspections used the same setup. The team proposes linking each case to equipment, shift and setup records before comparing matched cases. The reason is explicit: a difference attributed to the inspected object could instead arise from a changed setup. The connecting operation is a candidate inference; if the records cannot recover the relevant setup, the proposed comparison cannot support that distinction.

The team therefore refines this one constituent contribution: can the permitted records link enough relevant cases to comparable setups? It need not redesign every other step or add a fixed number of decomposition levels. A qualified existing explanation of result checking is reused. The whole candidates can now be stated:

• A SensorCo diagnostic specialist would link the permitted records, compare suitable error and non-error cases against the rival explanations, and return a source-traceable account of what is supported, excluded and unresolved. A qualified check, response to missing records and closure of the bounded engagement belong in this way.
• A qualified customer-local investigator would perform that linking and comparison without exporting the records; SensorCo would supply the needed interpretation of its record fields, and the participants would check the same promised account and resolve or report exceptions. Availability, responsibilities and complete burden remain to be established.

The first result is these two explained candidates and the gap about recoverable setup conditions, not a diagnosis, available capability or authorized investigation. That gap can support comparison of a bounded records inquiry with other ways, narrowing the requested result or stopping; STR.7 determines whether additional inquiry is worthwhile when that is unresolved. A negative records answer limits these candidates rather than proving that no diagnostic Method exists.

The team does not rank this diagnostic account, a year of service and a software licence as equivalent deliveries. They may later be compared as directions under a common purpose with their different contributions explicit. Finding the diagnostic possibility neither changes the service family’s existing four-day preparation limit nor grants data reuse rights.