Right after high school I worked at one of the big office furniture companies (you've sat in one of their chairs/cubes if you've worked in an office job). At so

Right after high school I worked at one of the big office furniture companies (you've sat in one of their chairs/cubes if you've worked in an office job). At some point, a couple hundred batches of $1200 chairs went out with one of the legs cast wrong. The easy thing to do was to have a piece of the packaging stuffed in the leg during assembly. The problem was, the service techs never knew about this, so when they'd go out and warranty a caster, they'd find a bunch of cardboard or whatever jammed in the leg, put the caster back on without replacing the cardboard, and the chair wouldn't be level. So, they would come back out next week with a new leg.