Why do they cling to barter?

-Smith’s goal was to create a Newtonian Physics of economics. Concept of a separate sphere called “The Economy” was relatively new in his day, and he wanted to show that it operated by rules like physics
-Newton was a Deist, believed in a clockmaker god who set the universe in order, Smith wanted to show the same thing. This is the “invisible hand” of the market
-This assumption of a kind of divine providence behind the market depends on a voluntary contract type model of exchange, in which all trades are barter for mutual advantage.
-So basically the fundamental belief of modern economics depends on viewing The Economy as a sphere of mutually beneficial trades orchestrated by a divine invisible hand. Allowing the more human relationships into this model raises questions about the divine perfection of it all.