Yeah, the kids of several thousand workmen.
And those of the thousands who will occupy the offices and do useful work.
Of course right now it seems like they're just feeding the kids of special interest groups and politically-connected study and design organizations.
If they had rebuilt the Twin Towers from the ground up, on the same timeline as the first Twin Towers, beginning with the clearing of the debris field in May of 2002, the ribbon cutting would have been last January.
Maybe America doesn't have the balls to build things like the Twin Towers any more?