Keep the boundaries of the answer.
A conclusion about one subsidiary, product or market can be misleading when reused elsewhere. A useful record identifies the question, relevant activities, source basis and circumstances in which the assessment was made. Distinguish what a source says from what has been established and from the judgment drawn from it.
Keep material disagreement and missing information visible. A shared summary should not make different local circumstances disappear. Personal notes, restricted advice and organisational guidance also need appropriate access and distinct purposes.
Reopen the right question.
Imagine that an earlier assessment depends on how a service is offered. A business team changes that model. The law may be unchanged, but the old answer now deserves another look. A new document, supplier arrangement or regulatory development can have the same effect.
Record the dependencies that matter and give the question an owner. A change should prompt a fresh assessment while preserving the earlier decision and its reasons. Replacing the old answer silently loses the context needed to understand both decisions.
Make the next step easier.
The next colleague should be able to see the current position, trace its basis, identify open questions and understand who acts next. Permitted agents need the same context in a form they can retrieve and use, with the appropriate boundaries.
Assess a knowledge system by whether it helps that colleague or agent continue useful work. A larger collection is valuable when its quality, coverage and stewardship support better decisions. Repeated fact-finding, stale answers and unclear ownership are signs that the method needs attention.