sculpture versus architecture
A quick answer to the series of serious questions raised by Marcus and "Pavilion" is that the notion of hybrid is very much alive in architectural discussions and debates today. Is "Pavilion" clearly a sculpture/architecture hybrid? And if so, are hybrids a 'category' that aesthetics must begin considering?
I'm a hybrid of a very mixed sort. My father was an ethnic German born and raised in Poland; my mother is an ethnic German born and raised in Yugoslavia (the aftermath of WWII eradicated both my parents worlds); my brother was born in Bavaria (the only born German in my family); and I am born and raised in Philadelphia. My German relatives (in Germany) see me as a "typical" American, yet they are at the same time astounded that I'm fluent in Modern German, plus that I am also somewhat fluent in a Danube-Schwabian dialect, a 'language' that as far as Germany today is concerned is dead. Moreover, my German accent (when I speak German) gives Germans pause. From what I gather, Germans find my accent strange yet also familiar. And to complete my hybrid reality, apparently when I speak English, it's with a Philadelphia accent.
There are lots and lots of hybrids out there. Yes, the categorization of the hybrid is not easy, and even most times messy, but please let's not ignore the hybrid by simply not seeing it for what it really is.