Every decade or so, it seems talk arises in Japan about relocating the functions of the central government outside the capital.

The reasons given are economic (it's cheaper outside Tokyo and hosting a government agency will improve the local economy), cultural (Japan is too Tokyo-centric and relocations will revitalize local culture), and logistical (given all the earthquakes and constant warnings about the 'Big One' in Tokyo, doesn't it make sense to decentralize before it's too late?).

The result has usually been a brief period of intense discussion, often accompanied by architectural plans for a gleaming new Diet building or ministry headquarters in the middle of some prefecture you've never heard of, followed by platitude-laden speeches from politicians about the need to get the bureaucrats out of Tokyo. The discussion then ends in silence, as bureaucratic opposition and political indifference lead to inertia.