The Unlikely Invention of the Post-It Note, From Failed Adhesive to Office Staple
When Post‑It Notes reached desks around the world, few knew the surprising story behind their creation. The journey began in the late 1960s when chemist Spencer Silver—while working at 3M—developed a unique adhesive that was strong enough to cling, yet weak enough to be removable without residue. Because it held only lightly, it seemed useless…