PPF 之外的点是

Question

PPF 之外的点是

BlackTom AI · Accepted Answer

PPF (production possibilities frontier) represents the maximum feasible combinations of two goods that an economy can produce given its current resources and technology.

1) Relevant concepts:
- Points on the PPF: efficient production — all resources fully and efficiently used.
- Points inside the PPF: feasible but inefficient — resources are underutilized or misallocated.
- Points outside the PPF: infeasible (unattainable) with the current resource/technology constraints.

2) Step-by-step reasoning:
- By definition the PPF traces the boundary of what is producible. Any point that lies beyond that boundary requires more productive capacity than is available.
- If a specific combination lies outside the frontier, no allocation of the existing inputs (labor, capital, land, technology) can produce that combination.
- Therefore, under the current resource endowment and technology, that point cannot be produced.

3) Intermediate “calculation” style logic (conceptual):
- Start with resource constraint R and technology T.
- PPF = set of (X,Y) such that production uses up R under T.
- A point (X*, Y*) outside PPF would require resources R' > R or improved T' > T.
- Without R' or T', (X*, Y*) is unattainable.

4) Why the correct answer is correct:
- The answer “impossible to achieve” is correct because an outside point exceeds the economy’s production capacity given current inputs and technology. It violates the constraint that the PPF represents the production limit.

5) Why other options are incorrect:
- “An inefficient point” describes points inside, not outside, the PPF.
- “Possible” is wrong because possible combinations are on or inside the PPF under current conditions.
- “Represents resource waste” is wrong; waste corresponds to points inside the frontier (unused resources), not outside.

6) Note on caveat: with economic growth, technological progress, or trade the PPF can shift outward, and a previously outside point could become attainable. But under the current PPF, such a point is impossible.

Conclusion: therefore the correct choice is “c. 不可能实现 (impossible to achieve),” matching the provided answer.

PPF 之外的点是Single choice

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PPF 内的点是

PPF 上的所有点都是

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