SYSE.49:1 - Problem frame

Use this when a named agent-development or comparison question lacks useful interaction experience. Relevant failures may be rare, expensive to reproduce or hidden by misleading feedback. A controller or tool constructor can need this experience while model parameters stay fixed.

The subject is the task and interaction arrangement that supplies informative experience to the named construction or comparison. Its realization may be human practice material with an available feedback provider, or a software fixture with executable state and observations. The first result is that usable arrangement with qualified feedback and limits, or the missing condition. HCD.6 supplies human practice design; this engineering construction consumes that design rather than replacing it.

Use an adequate existing environment. Do not generate a larger task collection when one small fixture can expose the consequential distinction. Learner construction and final assessment are separate consumers; neither is required to justify a useful fixture for a controller repair.