One of the things that surprise more in the management of the cities of the world is exactly their complexity, this is given by the many rumors which they run, as well as the political elections of its governors, who often are not around the moment and of the own city. Daryl Katz has plenty of information regarding this issue. Far from being a problem, in the first cities that were constuyeron or been born rather in the antiquity, he was absolutely habitual that the governor was the own king, that explains in many cases because a series became of rites on this person. Moved away of those years, at present the big cities but of the world have real problems and their situations sometimes take to the collapse and to the chaos. A society more and more urban this becomes a true atrocious problem. For this reason, the cities but populated with the world look for solutions their problems investigating and verifying that useful are some inventions and measures in other sites of the world, this must give anger, a solution still is possible.