[via Archinect] WTC Memorial designer Michael Arad discusses his original idea, design process, and experience in a too-brief interview for Architectrual Record Magazine.
Arad's reworked proposal (with Peter Walker) attempts a return to his original vision, in which very clear, stark voids pierce the horizontal plane of the plaza. More and more, the experience sounds similar to Michael Heizer's Nort, East, South, West installation at Dia Beacon.