""It is beautiful to watch the line of people move the giant sand dune ten centimeters to the side. In our time human beings move more of the Earth's surface than volcanoes, earthquakes, rain, and tectonic plate movement combined. Looking at the film, it is hard to see how we can do that. But there are five hundred people in the line, and seven billion of us on the planet. So, fourteen million times more people on Earth than in that line on the sand. And we aren't just using shovels. The multipliers there are harder to calculate, but say each shoveler expended about a hundred watts that day. Humanity as a whole, with its machines, exerted about forty billion watts. And so we change the Earth each day. The whole Earth is now a work of art that we make together. Lima and its shantytowns are also part of the film and the story and the artwork. We cannot keep all seven billion of us alive, except by making the Earth a work of art, which we must perform well to stay alive. With faith we will move that mountain too. Thank you for this beautiful image of how it will go. "