PSDA.Reference:2.1 - Do we need a model, an explanation, research or advice?
Identify what the recipient lacks. These contributions can be used together, but their completion conditions differ.
| Missing contribution | Useful return and supplying Method |
|---|---|
| A representation that makes a relationship inspectable | PSDA.3 constructs models for named questions and reconciles only their supported overlaps. A model can expose an unknown without settling it. |
| An answer already available in sources | RMP.1:4.3 recovers and interprets the relevant material, compares answer-changing alternatives and returns a sufficient answer or precise remaining question. |
| Grounds for an unresolved knowledge claim | RMP.1 establishes whether the question requires research; RMP.2 constructs and compares obtainable designs when design selection remains open. |
| A warranted account that the recipient can understand and use | EXD.1 identifies the missing explanatory connection and obtains its subject basis. A missing scientific or mathematical ground returns to that subject work. |
| Professional help with participation, comparison or advice | PSDA.11 bounds the engagement, recipient and choice authority. PSDA.11–15 develop these professional contributions. |
A simulation produces a result under a model and its inputs. Establish the model’s applicability before relying on that result for the present subject. Conversely, research may produce a defensible model or explanation as its useful result; its worth need not depend on an immediate commercial decision. Routine measurement, restoration of a service and acceptance against an established criterion can finish in their own practices without becoming research.
Use a sufficient existing contribution and stop this selection. If two kinds of work are needed, state what one must return to the other.