Doors

13 years in and we have catalogued about 12,000 doors. Some as small as a light switch, some the size of the entire side of a skyscraper. Nothing ever comes out of any of them. Everything you move beyond the surface is gone forever. No emissions, barely any reflection and mostly inconclusive OES have made the whole monitoring effort a colossal waste of time and money. Even if we still wanted to hide them, it has become practically impossible. And, as the Singaporean government has successfully argued, why would you? Their door on the north wall of the SGX Centre is the undisputed king of tourist attractions in the entire area.