In the mood for Chinese food, a University of California–Berkeley faculty member and his family were headed for San Francisco’s famed Chinatown.

Someone remembered that there was apt to be quite a crowd because of the All-Star Game. As a result, they took a detour to Oakland’s less famous Chinatown. How would this affect the economic impact of the All-Star Game? How would a serious analyst discover the extent of these decisions to go elsewhere?