When finished objects become commodities and break, they are easily replaced. When you break a chair, you buy another chair. We know well how to make one thousand chairs. But when a unique object breaks, we might mend. To learn the skill of mending is to also gain the skill of building, to understand the very urge to build. If we never mend, we not only risk building less but building in perverse ways.
To mend is to comprehend a human scale problem, and without this understanding our creations become strange creatures. The more finished goods become commodities, the fewer opportunities an individual has to generate new creation. The ability to mass-produce removes the opportunity for the great many to learn to produce at all.
from XXIIVV — commodity