(1) Society is human action - and in this sense all analysis is therefore micro-analysis. (2) The second idea states that social systems are aggregates - and as such follow laws that cannot be derived directly from the individual act. An aggregate is like a swarm of mosquitoes - the swarm consists of individual insects, and the motion of each insect varies considerably. The motion of the swarm as a whole, however, is the product of all these individual movements, and as such may be described without reference to them. (F. S. Nielsen: The Eye of the Whirlwind)