Resources are scarce and it is important to use them as efficiently as possible. Thus, it is essential to know if the production and distribution of national product made by an economy is maximally efficient. The production becomes efficient only if the productive resources are utilized in such a way that any reallocation does not produce more of one good without reducing the output of any other good. In other words, "efficient distribution" means that redistributing goods cannot make anyone better off without making someone else worse off. (See Pareto efficiency.)