Nobody Wanted Spencer Silver's Useless Glue — Until It Changed Every Office in America
In 1968, a 3M chemist accidentally invented an adhesive that was too weak to be useful — and spent years being politely ignored by his own company. It took a frustrated hymn-book reader losing his bookmark one too many times to finally crack the idea open. The Post-it Note wasn't born from genius. It was born from stubbornness.