**4.4 Social reproduction/Maintenance processes (Keeping the boxes operational)**

Social structures take energy to keep going, even if they sometimes appear to have massive solidity. If there is a lapse in the supply of involvements social structures can quickly crumble (as perhaps the examples of the great South American civilisations shows.) Experimentation with small groups has suggested that some social structures require both task and cohesive leadership and activities and it is likely that their [pertains across many larger social structures too. Social reproduction also requires many 'behind the scenes' day to day activities to run the structure.
