Cells in their turn are organized into complex societies of cells, such as vegetables and animal bodies. (religion-online.org)
This includes novel social arrangements, e.g., a division of labor, the formation of a more complex society with developed institutions, etc.. (religion-online.org)
The observation led the researchers to a radical conclusion: As complex societies emerged, the brain became smaller because people did not have to be as smart to stay alive. (discovermagazine.com)