Documenting your research is also about including in your notes why a record caused you to reach the conclusion that you did. Some records state things pretty clearly and explicitly--we say those are "direct" statements. Other times the researcher needs to take statements from several documents, combine them with other known facts to reach a conclusion not specifically stated in any one document. We say those statements are "indirect."
That reasoning needs to be included in your notes.
Just in case anyone else wonders how you got a "piece of information" that's not explicitly stated in any one record.
Or in case you forget.
But that would never happen, right?