ABSTRACT
Imagine a situation where a group of friends or relatives have come to visit, and you want to take them on a tour to show them your campus or your home town. For a tour with only a few destinations, the most efficient route may be obvious. But if the tour has more than four or five stops you might need to do some planning. A simple strategy, like moving from a location to the one closest to it, might be all you need (Figure 12.1).
