Smith examines expected advantages of specialization by division of work, including expan efficiency and gains from exchange, whether among town and nation or across countries.[ "hypothesis" that "the division of work is restricted by the degree of the market" has been as the "center of a hypothesis of the elements of firm and industry" and a "key rule of mon organization."[51] To Smith has likewise been credited "the main meaningful recommenda of financial matters" and underpinning of asset allotment hypothesis - that, under contest, proprietors (of work, land, and capital) look for their most beneficial purposes, bringing ab equivalent pace of return for all purposes in harmony (adapted to evident contrasts emerg such factors as preparing and unemployment).[52]