What is the small hole in a safety pin for?

A lesson in miniature design… to think about
This tiny detail embodies what’s called  invisible functional design  : essential, yet unadorned. Like a subtle stitching on a garment or the balance of a perfectly seasoned dish,  it goes unnoticed, yet makes all the difference .
In short, this tiny hole reminds us that even the simplest objects can be the result of brilliant engineering. A quiet but useful reflection, to be pondered well beyond the sewing box…
The next time you use a pin…
Take a moment to observe it. Feel the tension as it opens. Listen for the little click as it closes. Look for that discreet hole.  You’ll never look at a pin the same way again.
Hidden within this almost invisible detail is an inspiring idea: sometimes  it’s the most discreet elements that make the whole work . A reminder that even “small inventions” can reveal  admirable technical intelligence .
What if we started looking at everyday life with  a more attentive and curious eye  ?

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