PSDA.Sources:4.4 - A useful stop when access is incomplete

A reader should be able to locate the current question, recover its first useful result or gap, and identify the source or practice that can support the stronger claim. If source access fails, keep the missing premise explicit and preserve independent qualified work. The responsible practice may supply an adequate alternative result, a narrower claim or a blocker. Publication, accessible text, recent dates and well-written examples do not supply the client’s evidence or authorization.