The most mundane items often have a fascinating story behind them. Post-It Notes? We use them every day, whether in office work or to keep kids busy yet non-destructive. This is one of the rare stories in which the product came before there was a recognized need. After all, we had paper clips and thumbtacks already!
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(Simon Whistler of Today I Found Out tells us the story of Post-It Notes, and how they eventually came to be both ubiquitous and indispensable.
Source: neatorama