This month marks the 30th anniversary of the Post-It note. The story of this great invention is a classic. A Brit, Geoff Nicholson, came to the U.S., where he joined 3M in 1963. Working in the commercial tape division, he ran into Spencer Silver, who had invented a pressure-sensitive adhesive that no one else took any interest in. Another 3M employee, Art Fry, had the idea of using it on a notepad made from yellow scrap paper, and he started using his notes to mark the pages of a hymn book.
Nicholson believed the product was great, but his managers weren’t interested.