I just came across another RL example of this:

In checking out one of my hotel's rooms prior to a late arrival, I discovered that the brand-new (as of a month ago) mini-frig rocked significantly when I opened its door. So I wiggled it out of its cabinet and tilted it back to check the short screw-foot. But I could NOT adjust that foot sufficiently to make the frig come out level, as it came loose in my hand. It turned out to have a screw-length only ~1/4 inch long.

Then I thought to check the *opposite* foot. This turned out to have a ~1/2 inch long screw length. So I switched out these two feet and - Voila! - the frig sat perfectly level.

Somewhere there's an engineer who likely earned a bonus for "saving" the company in question the 0.05 cents (or whatever) per unit represented by shorting three of the unit's four feet by ~1/4 inch of steel each. Never mind the difficulties involved in getting the one screw with the absolutely-necessary ~1/2 inch screw length into the one correct hole during (3rd-world, low-wage, sweathouse-style) assembly. Or the lost future sales when end-users switch to another frig when random examples of this unit sit off-level, right out of the box.

--
Richard Aiken

"Never insult anyone by accident."  Robert A. Heinlein
"A word to the wise ain't necessary -- it's the stupid ones that need the advice." - Bill Cosby
"We know a little about a lot of things; just enough to make us dangerous." Dean Winchester