Gabbi Johnson, Chapter 12, question 5

I found his analogy at the beginning of the chapter very  intruiging about the machine that can produce anything into anything. At first I was thinking, that would be amazing if a machine like that could be invented, but then realized it does. Trade is a term often used but I never took the time to think about how significant it is. Especially when he used the example of having to build or make everything on your own from a house to food.