Punkie

Ah. There’s a reasons for that, as told to me by a supply sergeant in the military. A lot of suppliers had a BEL (Basic Equipment List), which says all stock must have a minimum and a maximum of XYZ in order to meet government spec. Some large items, like diesel generators, have a BEL minimum of 2, but also because of their size and storage complexity, have a maximum of 2. So it order to get a new one, you must get rid of one of the old ones. But if you get rid of the old one, you are below minimum BEL, and could fail inspection or an inventory check, if it takes a while to get a new one. Large items don’t always “hang around,” but they get manufactured on demand, so the only way to get a new one is to be without one for a very long period of time. Thus, you risk failing inspection. The best way to avoid that is to keep two and never order any.

Military logic.

A friend of mine started the anime meme “Is this a butterfly?” She’s actually employed as a translator for anime, so it made sense.