@watchhiddenpurpose: Why put a hole in a pen that's supposed to hold ink? On a BIC Cristal, that tiny barrel vent balances pressure and helps the ink keep flowing. Not the cap hole, that's a different feature. Built in. On purpose. Source: BIC Cristal technical press kit. Visual excerpts: Primal Space and desicons. Airflow diagram simplified. #HiddenPurpose #EverydayDesign #HowThingsWork

Hidden Purpose
Hidden Purpose
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Monday 07 September 2026 22:44:45 GMT
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squareturtle
SquareTurtle :
NASA did the opposite with a cartridge under pressure and sealed to send ball pens to space.
2026-09-07 22:57:38
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