SYSE.42:1 - Problem frame

Use this when a person or technical agent has selected an external aid and the task depends on applying it to the intended input and using the actual result. A calculator can execute a mistyped expression correctly; software can act on the wrong target; a useful return can be ignored.

Start with the supported action, intended expression or target, and the result the receiving work needs. Bind the input, use the selected means under its actual semantics, check the obtained contribution and put it to use. The first useful result is that used contribution or the precise condition preventing it.

Choose among complete available ways through C.38/C.11 when that choice is unsettled. A.15.7 steers the current action; C.24 plans a selected technical action’s calls when needed. An already sufficient result needs no fresh call. This pattern applies an available tool or aid; SYSE.26 designs a supported service interaction, while SYSE.48 constructs a missing reusable aid.