Art-itechture in public space

I was fascinated to discover the awareness of temporality and the public realm in this Boston Globe interview with Elizabeth Diller, of Diller + Scofidio. In the world of community-oriented development, D+S have a notorious reputation of being star architects: egoists who seek out object building as an end. While Ms. Diller does not espouse community involvement, she talked a lot about experimenting with space, particularly public space, and the desire to continue working in the public realm, on any scale. What do you think?