In ancient days, societies were illiterate and they do not have knowledge about universe.
1. In ancient days, societies were illiterate and they do not have knowledge about universe. With the passage of time, the literacy rate increased and people started to observe the universe and invent many machineries to make the lives of people easier. When people started to observe universe they became intelligent and intellectual. When people became intellectual about universe they tried to change their lives styles according to requirements of people. When they observed the universe then they will try to change themselves to make their lives full of comfort.