What Mac is demonstrating in the scenario is conservation in psychology. It is where an individual believes that a quantity should be all the same or same as its size, container or shape. It is what Mac is illustrating above for he believes that he and his sister should have the same cuts for the hot dog, which he believes that they should have an equal.
If you import more than you export, more money is leaving the country than is coming in through export sales. On the other hand, the more a country exports, the more domestic economic activity is occurring. More exports means more production, jobs and revenue.
