How job requirements have changed in the united states?

Going back to the early 1900's, a majority of average American workers were not highly educated (college degrees were not mandatory), and most worked in factories, or "blue-collar jobs". This continued through the decades until automated machinery took the place of human workers. The more we installed this machinery to do these jobs, the more workers were laid off.

Today, college education is essential for any job. Since nearly all of our production is by machinery, the only people companies look to hire are educated individuals who will work the "white-collar jobs" (office jobs, etc.)

social contract theory basically says that all individuals are born equal, and provided a god given right to consent to be governed. american government is based of this

thomas hobbes and john locke said that we are selfish, individualistic, and constantly at war with each other, therefore we need to be controlled. 

government is defined as the legitimate use of force to control human behavior within territorial boundaries, here comes in hobbes and locke.

hobbes takes the part about controlling human behavior. while locke takes the part of legitimate use of force, since force is not legitimate unless there is consent of the people. 

there are basically 3 goals of the government: 1) maintain order by protecting life and property. 2) providing public goods, those which are typically not provided by the public sector, such as roads and education. 3) promote equality be it political, opportunist or outcome equality.