Today Jen and I took a hardhat tour of the World Trade Center site. I can understand why some people are upset about how long things are taking there- but once you're down in the site, you understand why. There are at least a dozen enormous projects going on at once- buildings, transportation hubs, subway lines, the memorial and museum- and thousands of men and women working there every day putting it all together. For me, the most moving part of the tour was standing at the bottom of the empty reflecting pool. I was thinking about everyone we lost, and how much has happened since then, and how ten years is both a very long and a very short period of time.