I suspect Arun was referring not to the efficient use of "stuff" but rather the irrational desire to own/control stuff rather than simply make use of it in the supply chain. It would be absurd to hand launder one's everyday clothing instead of making use of a washing machine. However, it might not be rational to own one's own washing machine when a laundromat or laundry service (fluff n' fold, etc.) could be used instead. Many people irrationally desire to own stuff and might opt for a washer in their homes when it would actually increase their net happiness level to just go to the laundromat or pay someone to do the wash.