What does joseph touma mean when he says we're looking for a trickle up effect? Do you think bridge the divide will succeed in this goal

The following question asks about one or more selections from your literature textbook. you may use your textbook to answer this question. both “lob’s girl” and “jeremiah’s song” contain flashbacks. in a paragraph, explain what this plot technique adds to the stories. support your answer with one detail from each story.