In 2007 the planets urban population exceeded the rural population for the first time. From 1960 to 1980 the urban population was about a steady 2 billion lower than the rural population. From then on it started to reduce.
We see a gradual move in so many areas of life to the large. We have large supermarkets. We have larger football stadiums. We even have larger churches.
Some time ago Greenpeace started pushing the idea of small distributed power production. We now see the government pushing the idea of small nuclear reactors.
We get more efficiency by getting bigger. But now we have a threat of massive unemployment. Maybe we need to be less efficient. Maybe we need to go smaller if we are to survive as a society.