And I said to Professor Kurokawa, "" Wow, the architects must have really been kicking themselves when they realized that they'd made a mistake and put this one upside down. "" And he said, "" No, no, no. It was a very deliberate act. "" And he referred me to this lovely quote from the Japanese "" Essays in Idleness "" from the 14th century, in which the essayist wrote, "" In everything, uniformity is undesirable.