The X-Seed 4000 "is never meant to be built," says Georges Binder, managing director of Buildings & Data, a firm which compiles data banks on buildings worldwide. "The purpose of the plan was to earn some recognition for the firm, and it worked." Source: https://www.architecturalrecord.com/articles/3947-x-seed-inspires-tall-tales?v=preview

Sounds like a great goal to work towards, however we still need some advancements in engineering and construction.