Text 1
Before the invention of money, people used to get the goods and services they wanted by swapping things with others. The system was entirely dependent on an agreement between both people, each of whom needed to have what the other wanted to exchange.
The system of exchange started to work much more smoothly with the introduction of money. By using precious metals which had been officially weighed and made into coins, it became possible to sell what you produced in return for coins, and then use the coins to buy anything you wanted from a third party.
Text 2
Interpreting the feelings of other people is not always easy, as weall know, and we believe as much on what they seem to be telling us, as on the actual words they say.
Facial expression and tone of voice are obvious ways of showing our reaction to something, and it may well be that we ? express views that we are trying to hide. Body movements in general may also indicate feelings and interviewers often particular attention to the way a candidate for a job walks into the rooms and sits down.