In a paragraph, write down in general terms how to explain to a user what a data flow diagram is.

Up to this point, you seem to have had an excellent rapport with Kevin Cahoon, the owner of a musical instrument manufacturing company. When you showed him the data flow diagrams you drew, however, he did not understand them.
In a paragraph, write down in general terms how to explain to a user what a data flow diagram is.
Be sure to include a list of symbols and what they mean.
It takes some effort to educate users about data flow diagrams. Is it worthwhile to share them with users? Why or why not? Defend your response in a paragraph.