Travel for Planners Not A "Junket"

Campbell writes, "Cities in the modern world are beginning to share some features with the city-states of millennia past - communicating, trading, competing. But they're two differences: Today it's nation states, not city-states, that occasionally go to war. And unlike the walled cities that harbored flourishing trade in Medieval Europe, today there are literally thousands of cities on the rise, and looking outward in search not of silk and spices, but rather for sources of finance, global talent, and most of all, good ideas."