Diminishing Returns

Written by Studio AM.

Imagine adding workers to a kitchen while keeping its floor space and equipment fixed. The first few additions may help: one person prepares ingredients while another cooks. As more people arrive, however, they begin waiting for the same oven and crossing one another's paths. An extra worker may then add less output than the previous one.

Economists call this diminishing marginal returns. When one input increases while other relevant inputs remain fixed, the additional output from successive units may eventually decrease. Total output can still rise. What shrinks is the gain from the next unit, not necessarily the total produced.

A field offers another illustration. Extra fertilizer may initially raise the yield, but its effect depends on water, soil and other conditions. Once another constraint becomes important, more fertilizer may add little; excessive use can damage plants. The sequence is an illustration, not a claim that every field responds in exactly the same way.

The practical question is whether the next unit adds enough benefit to justify its cost. Gains need not rise proportionally with the input. Changing another constraint, such as adding equipment or improving the layout, can alter the comparison. Diminishing returns therefore does not mean that effort is useless or that an activity should always stop. It means paying attention to additional gains and to the conditions under which they are measured.

Questions

Choose an answer. The explanation appears after you answer.

  1. Question 1 of 4

    What is the main idea of the passage?

  2. Question 2 of 4

    What does the passage say excessive fertilizer can do?

  3. Question 3 of 4

    If an extra worker adds fewer meals than the previous worker, what can be inferred?

  4. Question 4 of 4

    What does 'input' mean in this passage?

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