Economics – The study of how people choose to use their limited resources to satisfy their unlimited wants Economy – A system used to manage limited resources for their production, distribution, and consumption of goods and services. Positive Economics – The branch of economics that uses objective analysis to find out how the world works. The goal is to describe how things are. Normative Economics – That branch of economics that applies value judgements to data in order to recommend actions or policies. The goal is to advise how things OUGHT to be done. Resource – Anything that can be used to produce an economic good or a Resources are limited and scarce, because they come in limited amounts and may have alternate uses. Scarcity – That condition that results because have limited resources to meet unlimited wants. Tradeoff – The exchange of one benefit or advantage for another that is thought to be better. Cost-Benefit Analysis – Away to compare the costs of an action with the benefits of that action. If benefits exceed costs, then the action is worth taking. Incentive – Any factor that encourages or motivates a person to do something. Prices, taxes, and laws create incentives that influence how people behave. Microeconomics – That branch of economics tjhat looks at the choices of individuals, households, and businesses. Macroeconomics – That branch of economics that focuses on the workings of an economy as a whole. Market – Any arrangement that brings buyers and sellers together to do business with each other. The Seven Principles of Economics: Principle 1: Scarcity Forces Tradeoffs (the no free lunch principle) Principle 2: Costs versus Benefits Principle 3: Thinking at the Margin Principle 4: Incentives Matter Principle 5: Trade makes People Better Off Principle 6: Markets Coordinate Trade Principle 7: Future Consequences Count The Law of Unintended Consequences – actions of people or governments always have effects that are not expected, or that are unintended.