Smith talks about possible advantages of specialization by division of work, including expanded work efficiency and gains from exchange, whether among town and nation or across countries. [50] His "hypothesis" that "the division of work is restricted by the degree of the market" has been portrayed as the "center of a hypothesis of the elements of firm and industry" and a "essential guideline of monetary organization."[51] To Smith has likewise been attributed "the main considerable recommendation in all of financial aspects" and underpinning of asset distribution hypothesis - that, under rivalry, asset proprietors (of work, land, and capital) look for their most beneficial purposes, bringing about an equivalent pace of return for all purposes in harmony (adapted to obvious contrasts emerging from such factors as preparing and unemployment).[52]