Why Pen Caps Have Holes in Them
(Photo: Globkrajono)I'd long suspected that disposable ballpoint pens had holes in the caps so that they'd dry out faster. It's planned obsolescence.But that was incorrect. It's actually to save lives.Every year, about 1...
https://www.neatorama.com/2016/05/05/Why-Pen-Caps-Have-Holes-in-Them/