It is real. Skyscrapers are being built from prefabricated components. Build rate = 3 floors per day. Why haul tons of raw materials up hundreds of feet and work up there, when all that is necessary is the finished module? A simple idea, but one that took considerable development.
“Broad Sustainable Building Completes World’s Tallest Prefab” – Treehugger
Pretending Not To Panic 