Economics is the social science studying the production, distribution and consumption of goods and services. It is a complex social science that spans from mathematics to psychology. At its most basic, however, economics considers how a society provides for its needs. Its most basic need is survival; which requires food, clothing and shelter. Once those are covered, it can then look at more sophisticated commodities such as services, personal transport, entertainment, the list goes on. Today, this social science known as “Economics” tends to refer only to the type of economic thought which political economists refer to as Neoclassical Economics. It developed in the 18th century based on the idea that Economics can be analysed mathematically and scientifically. Other schools of thought have included Classical and Modern Political Economy, Marxian Economics, Institutional Economics and Keynesian Economics. These all have different emphases on certain aspects of economics.