Cambell says that most cities of the world understand the importance of checking out how other cities work and are sending delegations all the time:
"...city leaders spread out around the world because they have short terms of office and know that learning from others is cheaper and less risky than pursing untested ideas and ending up in false starts. Good practices in successful cities offer short-cuts. The experience of the Olympics games in Salt Lake and Barcelona in the 1990s were of enormous assistance to Turin and Vancouver this decade. In turn, Barcelona and Turin have both studied venture capital practices in Silicon Valley. And Charlotte and Denver have both studied Portland's transit system. City-to-city exchange was ranked by survey takers by far as the most effective way to learn."