How do Laurie and David's reaction to the lesson differ?

After the lesson, Laurie is still disturbed by the movie—so much that she has lost her appetite. She gives her hamburger to David, whose appetite is fine. Amy and Brian Ammon join them at their table. Brian complains that the football team will probably lose its game this weekend. The players are disorganized and many do not show up to practice. Laurie is still upset about the movie, but David believes that she is taking it too seriously.

Laurie and David have very different attitudes about history. Laurie believes that atrocities can be prevented by ‘never forgetting’ past events, while David believes that it’s best to put the past behind us.