she finds out in advance her listeners educational level

　　and what information they want to know.

　　On the subject of space walks, for example,

　　audiences vary in their interests

　　and how much complexity they can comprehend.

　　To elementary school children,

　　Higginbotham may discuss a problem

　　that many kids want to know about.

　　How do spacemen in a spacesuit eat,

　　drink, and go to the bathroom?

　　Her answer is the spacesuit is really a small spacecraft

　　with room for food and water-containers,

　　and a waste collection system.

　　To a high school audience,

　　she might satisfy a curiosity that often arises

　　in her pre-speech interviews with students

　　who obviously have seen many science fiction movies.

　　Do spacemen carry weapons in case they encounter enemies in space?

　　Her answer is No.

　　To scientists, she might provide technical details

　　on such topics as the design of spacesuits that protects spacemen

　　from the deadly temperature extremes of space.

　　Just as elaborate preparation is required for success in space,

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