This morning, while drinking coffee from my rooftop, I watched men adding another level to the building next to me. At first I was slightly annoyed with the jackhammering, but after about 30seconds I stopped to actually watch them work. I was sitting on the 5th story of the building, and they were at eye level with me. I could see men and women coming up the stairs inside the unfinished building, carrying blocks and buckets of dirt up on their heads. There was a constant stream of people coming up, bringing dirt, dumping it, and going back down. Men on the top level were leveling the dirt and doing something else, I'm sure, but I couldn't quite see. Anyways, the impressive part for me was this constant stream of people carrying dirt up 6 stories (what we in America call the first story, here it's ground level). No machines. No animals. Just people. Just bucket after bucket, one at a time.