WHY ONE DAMN BOX!!!?
50 years of planning...
Millions spent... hundreds of people involved to create the city...
A book very well thought out on behalf of the author, but then, when the time comes to execute to plan...
They give the city ONE DAMN BOX?
Why not leave several boxes as a redundancy? Say about 3.
That way if one is lost or there is an issue with the locking mechanism, they are covered.
It seems implausible that the builders would not think of that.