経済学入門

This lesson introduces the concept of the hockey-stick growth pattern to explain how the Capitalist Revolution led to the Great Divergence in global living standards. Students will learn how the timing of this economic "kink" across different nations created modern wealth gaps and explore how to analyze these trends using both conventional and ratio-based economic scales.

This lesson explores how economic models simplify reality to isolate essential factors, using the ceteris paribus assumption to analyze the Industrial Revolution. It explains how entrepreneurs drive technological change and economic growth by pursuing innovation rents when relative prices make new, capital-intensive methods more profitable than existing alternatives.

This lesson explores the economic problem of scarcity, defining it as the tension between infinite human desires and limited resources like time. Students learn to model decision-making through trade-offs, opportunity costs, and the optimization of choices using the production function and the relationship between marginal rates of substitution and transformation.

This lesson examines how individuals optimize their choices between consumption and leisure by balancing personal preferences against economic constraints. It further explores how these individual decisions can create social friction when institutional mandates or market outcomes conflict with personal utility and social norms.

This lesson explores how institutions act as the "rules of the game" that shape economic outcomes, determining the division of labor and the distribution of gains. Students learn to evaluate these outcomes using the framework of economic feasibility and the dual lenses of Pareto efficiency and fairness.

This lesson explores how firms coordinate production through hierarchical authority rather than market prices, contrasting the visible hand of management with the invisible hand of the market. It also examines the principal-agent problem and the role of owners as residual claimants, highlighting how power dynamics and conflicting interests shape the internal operations of a firm.

This lesson explores how firms grow through economies of scale, technological advantages, and network effects while highlighting the constraints of organizational friction and the strategic shift toward outsourcing. Students will learn to analyze the trade-offs between internal production and market procurement, as well as the impact of market barriers on firm size and competition.

This lesson explores how prices function as a decentralized communication system that signals scarcity and coordinates economic activity. Students will learn how economic rent drives market adjustments, how demand curves reflect individual valuations, and how price elasticity influences a firm's ability to set prices and markups.

This lesson explores how markets move from disequilibrium to a new competitive equilibrium following exogenous shocks. It highlights how individual rent-seeking behavior and the constraints of the market's "short side" act as the primary engines driving spontaneous price adjustments.

This lesson explores the concept of market failure, explaining how institutional weaknesses and firm market power create efficiency gaps that prevent Pareto-optimal outcomes. Students will learn how markups, price-setting behavior, and the absence of strong legal frameworks distort market signals, ultimately impacting real wages and the division of labor.

This lesson explores the fundamental macroeconomic distinction between wealth as a stock and income as a flow, while highlighting money as a social system built on trust. It also examines the logic of consumption smoothing, explaining how individuals manage their resources over time to maintain a stable standard of living based on the principle of diminishing marginal returns.

This lesson explores the circular flow of the economy and the use of National Accounts to measure GDP through the triple-identity of spending, production, and income. It also examines the nature of economic fluctuations, defining recessions through both NBER and trend-based perspectives while highlighting the importance of avoiding double-counting in economic data.

This lesson explores the multiplier process, explaining how initial changes in spending ripple through the economy based on the marginal propensity to consume. It also introduces Okun’s Law to illustrate the empirical link between fluctuations in output and changes in the unemployment rate.

This lesson explores the economic and political consequences of price instability, focusing on how inflation acts as "noise" that distorts market signals and causes resource misallocation. Students will learn to distinguish between nominal and real economic values, understand the mechanics of stagflation, and analyze how inflation functions as a tool for wealth redistribution between debtors and creditors.

This lesson explores Joseph Schumpeter’s concept of creative destruction, explaining how technological progress drives long-term economic growth by replacing obsolete industries with innovative, more productive sectors. It highlights how the pursuit of temporary innovation rents incentivizes entrepreneurs to evolve the economy, ultimately raising living standards without causing permanent long-run unemployment.

This lesson explores the history of the global economy through three distinct waves of integration, examining how technological advancements and political policies have shaped trade patterns since the 19th century. Students will also learn how to measure market integration using price gaps and analyze the complex relationship between trade openness and economic growth.

This lesson uses the "bushfire analogy" to explain how periods of economic stability can lead to the accumulation of debt and systemic risk, ultimately triggering catastrophic financial crises like the 2008 Global Financial Crisis. Students will learn how mechanisms such as the financial accelerator and bank interconnectedness transform localized shocks into global economic collapses, and how policy interventions are necessary to prevent these vicious cycles.

This lesson explores the tension between resource scarcity and technological innovation through the Ehrlich-Simon debate, while examining how inelastic markets and environmental tipping points create significant economic risks. Students will learn to evaluate these trade-offs using concepts like the leave-town condition, innovation rents, and the necessity of adjusting GDP to account for environmental degradation.

This lesson explores global economic inequality through the "Global Skyscraper" metaphor, highlighting how citizenship and class determine income levels. Students will learn to analyze disparity using Purchasing Power Parity (PPP) and the Gini coefficient, while examining how the interplay of technology, institutions, and endowments shapes modern economic outcomes.

This lesson explores innovation as a two-part process consisting of invention and diffusion, emphasizing that technological progress requires a supportive institutional ecosystem to overcome coordination problems. Students will learn how the Schumpeterian engine of creative destruction and the non-rivalrous nature of knowledge drive economic growth while necessitating mechanisms like patents to incentivize development.