While there has been alot of talk about 3D printers, this takes it to the next level. As this article (Design, Download And Print Your House With WikiHouse — The Pop-Up City) shows, WikiHouse

t enables anybody, including non-design professionals, to design houses with Google’s free 3D design software SketchUp and instantly print and build them. Design your own dream house with the help of the crowd and a plywood printer.

I think this is fascinating. It could make building construction evolve at speeds closer to software. In the 21st century, everything will accelerate the way IT accelerated in the 20th century.