(12) What is economic theory function?Economists seek to understand the behavior of people and economists systems using scientific methods. These scientific methods can be classified into two categories of activities as below: Economic theory and categories of activities. However, economic theory relies upon principles to analyze behavior of economic agents. These theories are typically mathematical, representations of human behavior, e.g. consumers, employees, citizen will respect to the production/ distribution of products or services or consumption in microeconomic and the aggregate economy in macroeconomics. A good theory is one that accurately predicts future human behavior and can be supported with evidence. Economic theory trends to be a very abstract area od the discipline. It can apply mathematical and psychological scientific method to calculate and predict how any why future human, such as consumers, citizen, employees' behaviors for any social economy benefit or welfare.Theory concerns human behavior is generally constructed using one of two forms of logic, inductive logic or deductive logic. Most of the social studies, i.e. sociology, psychology relies in inductive logic to create theory. Inductive logic creates principles from observation. Scientists will observe evidence and attempt to create a principle or a theory based on any consistencies that may be observed in the evidence. Economists relies primarily on deductive logic to create theory. It involves formulating and testing hypotheses. So, the theory is created, and then data is applied in a statistical test to see of the theory can be rejected. So, economic theory will be tested comes form inductive logic or sometimes informed guess work. For both types of logic can be found in the social sciences and in the business disciplines to test the validity and the predictability of theories developed.The use of economics depends on how accurate economic theory predicts human behavior for aim. So, economic theory's objective is an attempt to make a social study more scientific and a systematic analysis of rational human behavior. It is the rationality that makes behavior predictable more accurate. However, assumptions are frequently needed to be used in economic analysis to product when and how human behavioral change for any economic topic research i. So, any economic theories and assumptions are needed to be used to attempt prediction of how and why the group of human, e.g. consumers, product competitors ( sellers), manufacturers, citizen etc. social group, their behaviors change or cause consumption change behaviors in our social lives easily.