Did You Know The Hidden Purposes Of These Everyday Household Items?
Why Do Pen Caps Have Holes?
We have heard stories of people who have mistakenly swallowed a pen cap; it could happen to anyone of us. Still, maybe one has pondered the question; why do some pen manufacturers make their caps with holes on top? Well, we have the answer.
It turns out it’s all a safety measure, for when someone swallows the seal, air will still flow through, which in turn ensures that the person doesn’t choke. That is quite a novel way to save lives, and while most people would think the hole is a design flaw, it has a much more important use.
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