The authors attempt to clarify the concepts of, and the link between, fixed costs and sunk costs. They argue that the root for possible confusion between fixed costs and sunk costs is the inconsistency in defining the term fixed costs. They define fixed costs uniformly as the costs that are...

The authors reply to Colander’s comment in this issue on their earlier article (Wang and Yang 2001). They emphasize the necessity to define fixed cost differently than sunk cost because fixed vs. variable costs and sunk vs. avoidable costs classify the total costs from two different...