Summary:
- The article discusses the invention of the Post-it note, a small adhesive paper square that can be easily stuck and removed from surfaces.
- It explains how the Post-it note was created by accident by 3M employee Arthur Fry, who was looking for a way to mark the pages of his hymnal without damaging the book.
- The article highlights how the Post-it note has become a ubiquitous office supply and a symbol of creativity and organization, with millions of them being used every day around the world.