Scarcity and Decision Making Notes

H2 Economics Chapter 1 Notes This document is intended as a summary of the points provided in the NJC 2023 H2 Economics Chapter 1 Seminar Notes. It is to be used as a study guide to provide a structure for studying the Chapter 1 Notes. 1 The Central Economic Problem In our society, there is a fundamental problem. While all of us wish to maximise our satisfaction, which we can achieve by consuming goods and services, there are scarce resources. Hence, some of our needs and wants cannot be satisfied. This is the problem of scarcity, in short. Scarcity is defined as the excess of unlimited wants over limited resources to produce goods and services to satisfy these wants. Wants are all the goods and services that consumers would purchase in order to increase their satisfaction, if they had unlimited income. Resources are inputs which can be used to produce goods and services, which consists of capital, entrepreneurship, land and labour. Land refers to resources supplied by nature. Labour refers to the resource of human effort, both physical and mental, which are directed to the production of goods and services. Capital refers to man-made resources that can be used in the production of other goods and services rather than being consumed for their own sake. Entrepreneurship is a human resource which is separate from labour, referring to managerial ability that involves the organising of factors of production. Entrepreneurs are rewarded in the forms of profits by taking risks related to the production of goods and services. Opportunity cost is the value of the next best alternative forgone when a choice is made. 1

NJC H2 Economics 2024 Chapter 1 Scarcity exists as there is an excess of unlimited wants over limited resources to produce goods and services to satisfy these wants. Since the inputs needed to produce goods and services are limited, it is impossible to produce all the goods and services consumers would buy to increase their satisfaction if they had unlimited income. This is known as the central economic problem of scarcity. Hence, a choice has to be made regarding the production of goods and services and the allocation of resources to production to obtain the highest level of societal welfare from the available resources. A decision must be made for which goods and services to produce and how much of each good and service to produce. A decision must also be made for the methods of production. Thereafter, a decision must be made for the distribution of the produced output. In selecting among alternatives, one chooses to produce one good over another good, and must forgo the other good which the resources could have been used to produce, resulting in opportunity cost 1 . Scarcity Necessitates Choice, and Choice Involves Opportunity Cost An Exercise in Identifying Resources What is the difference between labour and entrepreneurship? Labour refers to human effort — physical and mental in the general sense. Entrepreneurship specifically refers to the act of managing a firm’s decisions. It is not ownership per se, but rather the people who make the firm’s decisions. What type of resource would reclaimed land be considered as? It depends on what its primary purpose is. If used primarily for agriculture, recreation, or habitat restoration, it aligns more closely with the traditional economic definition of land. If developed for urbanisation, industrial purposes, or infrastructure projects, it may be considered as capital due to its role in enhancing economic productivity. What is the difference between financial capital and physical capital Financial capital cannot be used to produce resources directly and hence is not a resource at all. Instead, it can be used to exchange resources. Physical capital can be used in the production of resources directly. 1 In writing this point, you should include a graphical explanation using a production possibility curve (PPC), which will be covered in Section 3. 2

NJC H2 Economics 2024 Chapter 1 2 Rational Decision Making In Economics, a rational decision is one which maximises the self-interest of the economic agent. A choice is in the economic agent’s self-interest if he thinks that the choice made is the best one available. Thus, rational decision makers, in the pursuit of their self-interest, determine what and how much goods and services are produced, how these goods and services are produced, and the incomes of the different factors of production that produce them, allowing society’s scarce resources to be allocated efficiently. Marginal Benefit refers to the additional benefit gained from consuming or producing one more unit of the good/service. Marginal Cost refers to the additional cost incurred from consuming or producing one more unit of the good/service. Before making a decision, economic agents weigh the costs and benefits of an activity in order to maximise their self-interest. If the marginal benefit exceeds the marginal cost, it is rational to do more of the activity. If the marginal cost exceeds the marginal benefit, it is rational to do less of the activity. The adjustment process will reach equilibrium the moment marginal benefit equals marginal cost. This principle applies to consumers, firms and governments alike. The Three Step Approach 1a. In the free market, rational consumers aim to maximise their utility, which refers to the benefit or satisfaction consumers receive when they consume a good or service, subject to their budget constraint. They do this by considering their private costs and benefits. OR 1b. In the free market, rational firms aim to maximise profits, which is the difference between total revenue from selling goods or services and the total cost of producing them. They do this by considering their private costs and benefits. OR 1c. Governments aim to maximise societal welfare, subject to the government budget constraint. They do this by considering their private costs and benefits. 3

NJC H2 Economics 2024 Chapter 1 2. For a (economic agent), Marginal Private Benefit (MPB), is (example of MPB) 2 while Marginal Private Cost (MPC), is (example of MPC). 3. As long as MPB is greater than marginal private cost MPC from the consumption/ production of an additional unit of goods or service, the (economic agent) will increase consumption/ production from Q 1 to Q e . If the MPC is greater than the MPB from the consumption/ production of an additional