Which famous invention's brand story claims it was discovered by accident when Spencer Silver was attempting to create a super-strong adhesive but instead created a 'low-tack' reusable adhesive?

Throughout history, many groundbreaking inventions were accompanied by powerful brand stories that helped them become household names. The narrative behind how a product was discovered or created often becomes as famous as the invention itself. Test your knowledge about the original marketing stories and taglines that launched some of the world's most revolutionary inventions into the public consciousness.

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Post-it Notes
Velcro
Super Glue
Scotch Tape