Automation Lifts Both Industries
The question
The country of Kestrel produces only two goods, industrial machinery and processed food, and is currently producing on its production possibilities curve. Kestrel's engineers develop an automation technology that raises output per worker in both of its industries. Assume the size of Kestrel's labor force and its stock of natural resources are unchanged. Show the effect of this change on Kestrel's production possibilities curve. Show the effect on the Production Possibilities graph.
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Automation Lifts Both Industries: the worked answer
On the Production Possibilities graph, The PPC frontier shifts outward.
Why The PPC frontier shifts outward
Technology is one of the determinants of an economy's productive capacity. An automation technology that raises output per worker in both industries lets Kestrel produce more of each good using the resources it already has, so the maximum attainable quantity of both goods increases and the entire frontier shifts outward. The labor force and the stock of natural resources are unchanged, so the gain comes entirely from getting more output out of the same resources rather than from acquiring new ones.
What happens to the equilibrium
Kestrel's maximum attainable output of both goods rises, and combinations that were previously unattainable can now be produced.
The mistake students make on this one
A tempting wrong answer moves the curve inward, on the reasoning that automation replaces workers and leaves the country producing less. Automation here shrinks no resource: the labor force is stated to be unchanged, and each worker now produces more, so the maximum output of both goods is larger and the curve moves outward, not inward.
On exam day
Count the industries the improvement reaches before you draw: a gain confined to one industry rotates the frontier outward along that good's axis alone, while a gain in both industries moves the entire curve outward.
How this is graded
The checker reads every curve's position before and after your answer. You are marked correct only when The PPC frontier shifts outward and every other curve on the Production Possibilities graph stays where it started — the same standard an AP reader applies to a drawn graph: the right shift, and nothing extra. There is no AI involved; the rubric is the geometry.
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