Koolhaas talks about the changing face of architecture and the changing role of the architect in the age of globalisation. Architecture used to reflect the values of a society, now it expresses the aspirations of the architect.
In economics, signalling refers to the idea that one party credibly conveys some information about itself to another party. In evolutionary biology signalling has a more general meaning.
The work of Dutch filmmaker and photographer Johan van der Keuken (1938-2001) is in my genes. This may be why I have never been fully aware of his influence on my own work and thinking.