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Dynamic efficiency
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<p>In economics, dynamic efficiency is achieved when an economy invests less than the return to <a href="/facts/Capital_(economics)/lLkzDdoB">capital</a>; conversely, dynamic inefficiency exists when an economy invests more than the return to capital. In dynamic efficiency, it is impossible to make one generation better off without making any other generation worse off. It is closely related to the notion of "golden rule of saving". In relation to markets, in <a href="/facts/Industrial_economics/WWLtWmpC">industrial economics</a>, a common argument is that business concentrations or <a href="/facts/Monopolies/BXIQWUmR">monopolies</a> may be able to promote dynamic efficiency. </p>