In economics, diminishing returns is the decrease in the marginal (incremental) output a production process as the amount of a single factor of production is incrementally increased, while the amounts of all other factors of production stay constant.
The law of diminishing returns states that in productive processes, increasing a factor of production by one, while holding all others constant ("ceteris paribus"), will at some point return lower output per incremental input unit. The law of diminishing returns does not decrease the total production, a condition known as negative returns. Under diminishing returns, returns remain positive, though they approach zero
