Health-care managers decide where to locate new clinics and hospitals. ● Online shopping companies decide the routes and schedules of their vehicles, often on a daily basis. ● Transportation authorities select routes for new highways and anticipate their impacts. ● Retailers assess the performance of their outlets and recommend how to expand or rationalize store networks. ● Forestry companies determine how best to man age forests, where to cut trees, where to locate roads, and where to plant new trees. ● National park authorities schedule recreational path creation, maintenance, and improvement (Figure 1.1). ● Governments decide how to allocate funds for building sea defenses. ● Travelers and tourists give and receive driving directions, select hotels in unfamiliar cities, and fi nd their way around theme parks (Figure 1.2). ● Farmers employ new GI technology to make better decisions about the amounts of fertilizer and pesti cides to apply to different parts of their fi elds