This hypothesis is based on the Jarmo data. Braidwood argues that the hilly flanks were the location of wild ancestors of many domesticates. In effort to recreate resources used in the parent area, these new groups planted crops which resulted in domestication. Humans become dispersal agents for plants, protecting certain taxa - eventually causing morphological changes in some of them. How you organize societies has a big effect on productivity.
Bender talks about alliances and exchange theory.
When there is a communication-exchange network there is someone controlling activity and creating surpluses. She argues that it is not until this kind of society occurs that you see domestication. Sedentism, social and climatic factors.