Basic Economic Ideas & Resource Allocation Vocabulary

Core Definitions and Scope of Economics

• Definitions of Economics:

  • According to Lionel Robbins: Economics is the science which studies human behaviour as a relationship between ends and scarce means which have alternative uses.
  • Social Science Definition: Economics is the social science which deals with the study of how to allocate scarce resources in the most efficient ways.

• The Basic Economic Problem:

  • A situation of relative scarcity of resources in relation to the unlimited wants and needs of the people.

• Main Agents in an Economy:

  • Firms: Producers of goods and services.
  • Households / Individuals: Consumers of goods and services.
  • Government: Regulators of economic activity.

• Economic Goods:

  • Defined as a good which is relatively scarce and will need to be allocated to a particular use via an allocative mechanism.

• Branches of Economics:

  • Microeconomics: The study of individual economic agents.
  • Macroeconomics: The study of aggregate economic principles affecting the whole economy.

Fundamental Economic Questions and Methodological Concepts

• Basic Economic Questions:

  • What to produce?: As available resources are scarce, an economy cannot produce everything and must make a decision on what specific goods and services to produce.
  • How to produce?: Refers to the choice of the best method of production to get maximum benefit from resources.
  • For whom to produce?: Refers to the selection of a category of people who will consume the produced goods.

• Ceteris Paribus:

  • A Latin phrase meaning "all other things being equal".
  • Acts as a shorthand indication of the effect of one economic variable on another by assuming no changes in other external factors.

• Types of Economic Statements:

  • Positive Statements: Objective statements based on factual evidence that can be tested, verified, or rejected.
  • Normative Statements: Subjective statements based upon a value judgement that cannot be proven or disproven by facts.

• Margin:

  • Refers to analytical decisions studying the effect of a change on $1$ additional unit of output, input, or consumption.

Time Periods, Factors of Production, and Choice

• Economic Time Periods:

  • Short Run: A time period in which some factors of production are fixed while some are variable, and technology remains constant.
  • Long Run: A time period in which all factor inputs, except technology, can vary.
  • Very Long Run: A time period in which all factor inputs, including technology, are variable.

• Factors of Production:

  • Land: Natural resources used in production.
  • Labour: Human effort supplied to the production process.
  • Capital: Man-made resources used to produce other goods and services.
  • Enterprise: Risk-taking and managerial skill that organizes the other three factors of production.

• Choice and Opportunity Cost:

  • Choice: Because resources are scarce, choices must be made regarding which human wants should be satisfied first.
  • Opportunity Cost: Defined as the benefit of the next best alternative foregone.

Production Possibility Curve (PPC) Framework

• Definition and Function of the PPC:

  • A graphical representation of the basic economic problem and opportunity cost.
  • Represents the maximum level of output an economy can achieve using its current resources fully and efficiently.

• Diagrammatic Setup:

  • Vertical Axis ($Y$-axis): Output of Good $Y$ (or Good $A$).
  • Horizontal Axis ($X$-axis): Output of Good $X$ (or Good $B$).

• Analysis of Points Relative to the PPC:

  • Point ON the Curve (e.g., Point A): Points on the curve represent efficient utilisation of resources.
  • Point INSIDE the Curve (e.g., Point B): Indicates an underutilisation of resources or productive inefficiency.
  • Point OUTSIDE the Curve (e.g., Point C): Represents an output level that is not attainable at the current time with existing resources and technology.

• Shape and Curvature of the PPC:

  • Concave to the Origin: Standard PPCs are concave to the origin due to increasing opportunity cost as resources are reallocated between goods.
  • Linear Curve: A straight-line PPC occurs where the opportunity cost is constant.
  • Underlying Assumption: Drawn under the assumption that technology is held constant.

PPC Dynamics: Shifts, Causes, and Resource Allocation Applications

• Shifts in the PPC:

  • Outward Shift / Expansion (Fig A): Represents economic growth and an expansion of productive capacity.
  • Causes: Economic growth, discovery of new natural resources, improvement of technology, capital inflows (such as loans/investment), and immigration or increase in the labour force.
  • Inward Shift / Reduction (Fig B): Represents economic contraction or economic recession.
  • Causes: Economic recession, adoption or reliance on inferior technology, war, natural calamities, and exhaustion of resources.

• Applications of the PPC:

  • Trade-off Between Consumer Goods and Capital Goods:
  • Consumer Goods: Goods used to satisfy wants directly.
  • Capital Goods: Goods used to create other goods; created via investment and subject to physical depreciation over time.
  • Pros and Cons of Resource Allocation Choices:
  • Prioritising Consumer Goods:
    • Pros: Increases current living standards.
    • Cons: Resources may be exhausted over time without sufficient capital goods to maintain capacity.
  • Prioritising Capital Goods:
    • Pros: Expands future productive potential, leading to sustained economic growth and higher long-term living standards.

Specialisation, Division of Labour, and Economic Structure

• Specialisation:

  • The process whereby economic agents focus on one specific economic activity or line of production.
  • Pros: Creates a production surplus which may be exported, increases efficiency, and raises living standards.
  • Cons: Causes a lack of flexibility, which can increase structural unemployment if demand shifts.

• Division of Labour:

  • The breakdown of a production process into individual, specialized tasks to be carried out by specific workers.
  • Pros: Saves time, makes it easy to apply technology/mechanisation, increases worker skill through repetition, and increases worker productivity.
  • Cons: Creates worker dependency on other steps in the production process, causes boredom and monotony, and leads to over-focus on narrow skills.

• Economic Structure:

  • An economy is divided into three primary sectors:
  • Primary Sector: Extraction of natural resources.
  • Secondary Sector: Manufacturing and construction.
  • Tertiary Sector: Service sector.

Economic Systems: Market, Command, and Mixed Economies

• Market Economy:

  • An economic system where resource allocation decisions are based entirely on supply and demand interactions.
  • Basic Questions Handling:
  • What to produce: Goods and services that maximize profit.
  • How to produce: The most cost-effective method of production.
  • For whom to produce: Those who are willing and able to pay.
  • Advantages (Pros):
  • Consumer sovereignty.
  • No taxation.
  • Competition encourages low prices.
  • Freedom of enterprise.
  • Efficient resource allocation.
  • Disadvantages (Cons):
  • Inadequate provision of public services and public goods as they are unprofitable.
  • Overproduction of demerit goods due to information failure.
  • High risk of inflation.
  • Monopoly exploitation.
  • High levels of income and wealth inequality.

• Command Economy:

  • An economic system where allocation of resources is decided entirely by the government.
  • Basic Questions Handling:
  • What to produce: All necessities and public welfare goods.
  • How to produce: The method that achieves maximum employment.
  • For whom to produce: Everyone in society.
  • Advantages (Pros):
  • Decreases inequality.
  • Direct provision of public goods and merit goods.
  • Focuses on the maximisation of social welfare.
  • Absence of private monopolies.
  • Easier coordination of national resources in times of crisis.
  • Disadvantages (Cons):
  • Bureaucratic and highly inflexible.
  • Less incentive for innovation due to continuous government support.
  • Expensive administration.
  • Limits individual democracy and consumer freedom.

• Mixed Economy:

  • An economic system that combines elements of both market and command economies.
  • Advantages (Pros):
  • Eliminates bad competition while preserving constructive market mechanisms.
  • Increases efficiency due to competitive pressure.
  • Boosts overall economic growth.
  • Disadvantages (Cons):
  • Inherits a combination of disadvantages from both market and command economic systems.

Transitional Economies

• Definition:

  • An economy that is in the process of changing from a command economy to a market economy or mixed economy.

• Key Issues Faced During Transition:

  • Inflation: The state can no longer fully control prices, leading to increasing inflation compared to centrally planned regimes.
  • International Trade: Trade relationships become liberalized, but greater freedom can cause severe imbalances between imports and exports.
  • Unemployment: Workers face structural difficulties moving from state-guaranteed employment to market-driven sectors, leading to increased unemployment and reduced incomes.

Money and Systems of Exchange

• Definition of Money:

  • An item generally acceptable as a mode of payment for goods, services, or debt settlements.

• Barter System:

  • The direct exchange of one good or service for another without a monetary medium.
  • Disadvantages of Barter:
  • Requires double coincidence of wants.
  • Lack of a common measure of value.
  • Indivisibility of certain products (e.g., live animals/livestock).
  • Difficulty in storing value due to perishable goods.

• Forms of Money:

  • Bank Deposits: Money held in accounts with financial institutions.
  • Cash: Physical currency consisting of notes and coins.
  • Near Money: Assets that can be quickly transferred or converted into liquid money.
  • Legal Tender: Payment instruments that must be accepted legally by law for debt settlement.

• Essential Features of Money:

  • Generally Acceptable: People must be prepared to accept it for payment to be complete; supply must be limited to prevent it from becoming worthless.
  • Durable: Must physically last long enough to be reused continuously.
  • Portable: Must be easy to carry.
  • Homogenous: All units of currency of a specific denomination must be identical.
  • Recognisable: Must carry distinct marks for clear identification.
  • Stability: Value must remain stable over time.

• Functions of Money:

  • Medium of Exchange: Accepted as payment for goods and services.
  • Unit of Account: Enables the economic value of different goods and services to be compared.
  • Standard for Deferred Payment: Enables borrowing and lending transactions; encourages the provision of credit as an incentive to trade.
  • Store of Value: Satisfies present wants while allowing individuals to make financial provisions for future wants.

Classification of Goods and Market Failures

• Goods:

  • Defined as anything that satisfies consumer wants.

• Public Goods:

  • Goods provided by the government and generally supplied free of cost.
  • Non-rival: Consumption by one person does not reduce availability to others.
  • Non-excludable: Non-payers cannot be excluded from consuming the good.
  • Free Rider Problem: Anyone can benefit from public goods without paying since they are free.
  • Non-rejectable: Consumers cannot abstain from or reject consuming the good.

• Private Goods:

  • Goods produced by the private sector with the specific intent of earning profit.
  • Rival: Consumption by one individual leaves less available for others.
  • Excludable: Access can be restricted to those unwilling or unable to pay.

• Quasi-Public Goods:

  • Goods that fall in between public goods and private goods, possessing some characteristics of both.

• Merit Goods:

  • Products that yield positive externalities but are underproduced and underconsumed in a free market due to imperfect information ($\text{II}$).
  • Producers and consumers lack sufficient information to make rational decisions.

• Demerit Goods:

  • Products that generate negative ($-$) externalities and are generally overproduced and overconsumed due to imperfect information ($\text{II}$).

• Information Imperfections:

  • Moral Hazard: The tendency of insured or protected individuals to take greater risks because financial consequences are borne by others.
  • Adverse Selection: A situation where imperfect information leads to an unsuitable or high-risk person obtaining insurance coverage.