Why it matters
Changing equipment is a choice about relative costs, not simply replacing workers. Compare what changes while keeping the desired output clear.
A worked example
A bakery facing higher labour costs might use a mixer more and manual kneading less to make the same amount of bread.
Illustrative example · simplified assumptionsA common mistake
Assuming inputs can be swapped without limits.
Where the idea needs care
Equipment costs, skills and production technology constrain what can be substituted.
Apply the idea
Explain this concept using a different example from your spending, work, business or a policy debate. State what stays fixed and what could change the result.
See the supporting infographic
The written explanation above is the main lesson. This image offers another way to remember it.
Sources and further study
Examples and explanations by Alibomics. Numeric illustrations are not current market quotations.