itself. The modern nail clipper, with its lever mechanism, was patented in 1881 by a man named William C. Edge. Before its invention, people used scissors, small knives, or even their teeth to manage their nails.
The design of the clipper has remained largely unchanged for over a century becausefocus entirely on the cutting function and ignore the rest of the tool.
Second, the hole is incredibly subtle. It is small, often the same color as the rest of the clipper, and integrated seamlessly into the lever. Because it doesn’t impede the primary function, our brains simply filter it out
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