It is true that, as we go on improving, the margin of improvement becomes narrower, and its attainment more difficult and costly.
William Stanley Jevons
Where these words come from
- 95% sureThese words were traced back to where they first appeared. That source is listed below.
- The Coal Question, Chapter VII: Of the Economy of Fuel (1865; second edition 1866); Exact wording and attribution checked. Historical argument about fuel-efficiency rebound in manufacturing; not a universal prediction for every technology.
- The Coal Question, Chapter VII: Of the Economy of Fuel (1865; second edition 1866)
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