Wikipedia:Wikifurniture

Consider the Wikifurniture Corporation, a small company engaged in producing high-end massive pieces of furniture.

The furniture is always constructed of wood found in "reliable lumberyards"

Everyone knows that sometimes even "reliable lumberyards" may end up with substandard, even (dare we say it?) rotten pieces of wood.

Some of the furniture is subject to fairly strict rules about requiring fairly nice wood, but some of the carpenters in the company feel as long as they can find the stamp on the wood saying "reliable lumberyard" that they should be free to use it. Some of them, especially if they do not like the person they are making the furniture for, even seek out the worst pieces of wood from the "reliable lumberyards" and object if another carpenter says "But that piece is pretty rotten."

The company owners do not always seem to keep on top of such carpenters, so a great deal of the furniture in the showroom has massive chunks of substandard wood. The carpenters who try to keep most of the worst wood out of the furniture are generally opposed by some who seek to put substandard wood into the furniture (especially if they dislike it). When working on furniture they like, some of these same carpenters will insist that only the finest grade of fine woods can be used in making the furniture, and that only specific "reliable lumberyards" are good enough for such furniture.