Which famous adhesive product was accidentally invented when Spencer Silver attempted to create a super-strong adhesive but instead created an unusually weak, pressure-sensitive one?

Throughout history, many revolutionary products were initially developed for entirely different purposes than what made them famous. This trivia explores one such fascinating product discovery where an inventor's 'failed' experiment led to one of the most recognizable consumer products in the world. Test your knowledge about this iconic accidental invention that transformed from a laboratory disappointment into a global sensation.

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Post-it Notes
Gorilla Glue
Velcro
Super Glue