成長のコストと競合する目標
導入済み| English | 意味 |
|---|---|
| income inequality/ˈɪŋkʌm ɪniːˈkwɒlɪti/ | 所得不平等 |
| emissions intensity/ɪˈmɪʃnz ɪnˈtensɪti/ | 排出強度 |
A decision you can investigate
- Cleaner production per unit can coexist with more total pollution when output rises fast enough. Average income can rise while a poorer group loses income.
- Compare totals and distributions before judging the growth outcome.
Build the explanation
- Resources devoted to investment or expansion have an opportunity cost: they could support current consumption or another public priority. Growth can increase pollution, habitat loss and resource depletion if activity expands faster than cleaner technology or regulation reduces damage. Rapid demand can raise imports and a trade deficit when domestic supply cannot meet expenditure, but export-led growth or import replacement may improve trade instead.
- Unequal ownership, skills or regional access can concentrate gains and increase income inequality 收入不平等. When aggregate demand outruns available supply, growth can accompany inflation, especially near capacity; productivity-led supply growth can relieve price pressure. These costs are conditional. Identify the growth source, time horizon, distribution and policy response rather than presenting growth as either universally harmful or costless.
Work through the evidence
- A fictional output index rises 100→120 and emissions per index unit fall 0.50→0.45. Total emissions rise from 50 to 54, an 8% increase, despite 10% lower intensity. Reducing intensity is progress but does not establish falling total emissions.
- In a separate two-household example, comparable real incomes change 20/80→18/102: mean rises 50→60, up 20%, while the lower income falls 10%. The top/bottom income ratio rises 4→5.67, demonstrating greater inequality in this deliberately small case.
- A capacity project costing 40 from a fixed resource budget 100 leaves 60 for other uses rather than 100; the forgone alternatives are its opportunity cost, although later benefits may justify it.
総排出量はどれだけになるか？
難易度 1/5 · 100 コイン + 今日初回完了時に小ボーナス付与
120×0.45=54.
低所得世帯の実質所得はどう変化するか？
難易度 1/5 · 100 コイン + 今日初回完了時に小ボーナス付与
(18−20)/20×100=−10%.
排出強度の低下は常に総排出量の減少を意味する。
難易度 1/5 · 100 コイン + 今日初回完了時に小ボーナス付与
産出スケールが単位あたりの排出量減少を上回ることがある。
Test the limits
- The fictional emissions calculation concerns one measured pollutant, not a complete ecological assessment or actual national data. Inequality measures and household needs vary; the two-person ratio illustrates distribution, not a national Gini estimate.
- An investment cost is not automatically a net social loss: compare future benefits, external effects and alternative uses. Import growth can reflect productive machinery with future export benefits; a trade deficit is not automatically unsustainable. Inflation risk depends on spare capacity, costs, expectations and supply response. Regulation, redistribution and cleaner innovation can reduce particular costs but themselves require resources and evaluation.
需要牽引型成長がインフレをより引き起こしやすくなるのはどのような時か？
難易度 1/5 · 100 コイン + 今日初回完了時に小ボーナス付与
生産能力の制約により、追加需要が価格を引き上げる可能性がある。
Apply and explain your answer
- Why do lower emissions per unit and higher mean income fail to establish that every outcome improves?
- Total emissions also depend on output scale, and the mean hides distribution. Here emissions rise 8% and the lower household’s real income falls 10%.
用語とそれぞれの意味を結びつけよ。
難易度 2/5 · 140 コイン + 今日初回完了時に小ボーナス付与
各用語を、その明示された経済的関係に用いること。
Use the terms precisely
- emissions intensity 排放强度: Emissions per specified unit of output.
- income inequality: Differences in the distribution of income across people or groups.
A fictional output index rises 100→120 and emissions per index unit fall 0.50→0.45. Total emissions rise from 50 to 54, an 8% increase, despite 10% lower intensity. Reducing intensity is progress but does not establish falling total emissions. In a separate two-household example, comparable real incomes change 20/80→18/102: mean rises 50→60, up 20%, while the lower income falls 10%. The top/bottom income ratio rises 4→5.67, demonstrating greater inequality in this deliberately small case. A capacity project costing 40 from a fixed resource budget 100 leaves 60 for other uses rather than 100; the forgone alternatives are its opportunity cost, although later benefits may justify it.
The fictional emissions calculation concerns one measured pollutant, not a complete ecological assessment or actual national data. Inequality measures and household needs vary; the two-person ratio illustrates distribution, not a national Gini estimate. An investment cost is not automatically a net social loss: compare future benefits, external effects and alternative uses. Import growth can reflect productive machinery with future export benefits; a trade deficit is not automatically unsustainable. Inflation risk depends on spare capacity, costs, expectations and supply response. Regulation, redistribution and cleaner innovation can reduce particular costs but themselves require resources and evaluation.
Resources devoted to investment or expansion have an opportunity cost: they could support current consumption or another public priority. Growth can increase pollution, habitat loss and resource depletion if activity expands faster than cleaner technology or regulation reduces damage. Rapid demand can raise imports and a trade deficit when domestic supply cannot meet expenditure, but export-led growth or import replacement may improve trade instead.