Why can ballpoint pens fail permanently when they still have so much ink left?
Why can ballpoint pens fail permanently when they still have so much ink left?
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11 comments
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Why can my car stop running forever when there's still a full tank of gas?
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Ballpoint pens: known for being just as complex as cars.
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China produced cars before ballpoint pens
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Well, duh. I’ve seen movies, they write with paint brushes, why would they need pens?
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11 comments