Social Organization and Science necessity

Life start near water. If you look at Egyptian, they exit near river nile.

 or Indus Valley Civilization in sindh called Hapara near arabian sea.

Early people exit in tribes or small groups in deserts. They protects their area or land where they lived from animals and others tribes, as well. Social organization, which means "an organization who has small numbers of people, that small number of people have own leader, they protect their lives, collect food, build fortification." When the organization scale, or need more food, better shetter, better fortification or even better tools, then most of them left tribe and explore or some of them think about their problems. Those who left called explorers, those who think about problems solution study science.  Even in some cases scientists also left their tribe for sake of knowledge. 

According to ibn-khaldun first tribes build social organization, then they move towards comfort called study of science.