There are a few caveats. The most common involves the problem of presentism in which the students' portrayals become so infused with their knowledge of the events and values of the present that they do not accurately reflect the thinking of the period being studied. Another problem arises with students who are reticent about performing in public. This can be a particular problem with high-school students who are often very anxious about peer approval. I encourage students to come and talk with me if they have a problem. Then, I work with the student to create a short-planned speech. Having spoken once, most students find each additional speech easier and often graduate to more extemporaneous comments. The last problem deals with the complexity of a successful role-play, or simulation. It is very important that the students have a clear understanding of the assignment, their responsibilities, and the criteria on which they will be judged.