An ethics professor at Princeton Seminary asked for volunteers for an extra assignment. About half the class met him at the library to receive their assignments. The professor divided the students into three groups of five each. He gave the first group envelopes telling them to proceed immediately across campus to Stewart Hall. He told them that they had 15 minutes and if they didn't arrive on time, it would affect their grade. A minute or two later, he handed out envelopes to five others. They were also to go over to Stewart Hall, but they had 45 minutes. The third group had three hours to get to Stewart Hall. The students weren't aware of it, but the professor had arranged for three drama students to meet them a…