The story of the project’s origins is shrouded in mystery, but what is known is that, because the residents couldn’t decide on what they wanted to build, they made three rules. The first was that, not only would they build without any plan or blueprint, they would not discuss the direction of the project at all. Second, when they were on the building site, no one was allowed to speak — at all. Third, the building would never be completed, because anyone at any point could decide to take it in a new direction.
Source : Polis