Sometimes this can be particularly helpful if you have made new discoveries about things your relative might have had first or second hand knowledge of.
- Do you locate a family living next to the interviewee's parents in 1920 that had the same last name as the mother and whom the interviewee never mentioned?
- Does an estate settlement mention a family member living in a location that was "news" to you? Your relative may know something.
New details may jog the respondent's mind about things you never even knew to ask the first time around.