I would also like to address the social and political implications of architecture which arise in the discussion between you and Koji Taki. To make a very long story short, architecture has a kind of presence that influences the movement of society and political activities around it, and you can't ignore that. Not like a trigger, actually. It's the container for the movement of society, not a catalyst. Some architects believe in a solidity of architecture, but my opinion is that architecture, in particular in Japan where things are so rapidly changing, has to be able to move along with the changes in society.
Architecture has to have that kind of flexibility and ability to move with society.