Setting aside quality assurance and risk assessment/mitigation, I'm seriously impressed with the speed in which they construct complex infrastructure. The are some good reasons we don't quite go at this pace, but there are lots of good lessons about expediency to be gleaned as well.
This is exactly the opposite of complex infrastructure. They're reducing a hospital down to the essentials: beds under a roof. If it weren't winter, they could've gotten away with just using tents, too.
...all we see so far is a TON of excavators digging a hole.