What concept did the text state was the true invention, not just the ink or mechanism alone?
Answer
The system combining the right ink with a perfectly fitted mechanism.
The text emphasizes that a purely mechanical improvement or specialized ink alone would have failed; the true invention was the system where the thick ink and the perfectly fitted ball socket mechanism worked together.
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Invention of A Pen | The Dr Binocs Show | Peekaboo Kidz - YouTube
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