"On April 6, 1980... a remarkable new technology arrived in stationery stores around the nation. It was so simple to use, even a CEO could master it. It was so perfectly designed, it didn’t require semi-annual upgrades. It was so versatile, it actually performed better than advertised. It was the Post-it Note.
Two and a half decades later, as the little yellow notes celebrate their silver anniversary, it’s easy to forget what a recent innovation they are. Thanks to their material simplicity, they seem more closely related to workplace antiquities like the stapler and the hole-punch than integrated chips...
In 1968, while searching for new, patentable adhesives, a chemist named Spencer Silver mixed some simple organic molecules with a reaction mixture in proportions that defied industry convention. This produced an adhesive that, in the lexicon of science, consisted of “inherently tacky elastomeric copolymer microspheres.” On the molecular level, this substance resembled the pebbled skin of a basketball. This characteristic sabotaged its bonding power; the tiny spaces between the microspheres made it impossible to get complete contact between the adhesive and another surface. In layman’s terms, it was a glue that didn’t stick very well.
Pessimists would have called this a failure; Silver viewed it as a challenging puzzle. What could an underachieving adhesive be useful for?..."