That was the ancient economy, before money even existed. You gave stuff to people. Bread, pots, meat, build a cabin. They gave stuff back that you needed, roughtly about the same value, but never exactly the value. Everybody has to be a little in debt to anyone else. If you gave back exactly what it’s worth, it means you don’t want to deal with that person anymore.
That was the ancient economy, before money even existed. You gave stuff to people. Bread, pots, meat, build a cabin. They gave stuff back that you needed, roughtly about the same value, but never exactly the value. Everybody has to be a little in debt to anyone else. If you gave back exactly what it’s worth, it means you don’t want to deal with that person anymore.