| − | Diminishing marginal returns consist of the inevitable point beyond which additions of a variable factor (input) will yield diminishing marginal returns (output) per unit of the variable factor. All other factors of production are held fixed for this analysis.
| + | The principle of '''diminishing marginal returns''' states that [[production system]]s have a point beyond which each additional unit of [[input]] will yield less and less additional [[output]]. All other factors of production are held fixed for this analysis. |