What the Post-it Note Teaches About Happy Accidents in Design
A glue that barely worked became a product on nearly every desk, because someone kept the failure around long enough to find its use.
In 1968, Spencer Silver, a chemist at 3M, was trying to make a very strong adhesive. He made the opposite: a glue that stuck lightly, peeled off cleanly, and could stick again. Nobody had a use for it, so the glue sat on a shelf while Silver told anyone who would listen about it.
Several years later, a 3M colleague named Art Fry had a small, recurring problem. The paper bookmarks in his church choir hymnal kept falling out. He remembered Silver's glue and tried a little on a strip of paper. The bookmark stayed put and lifted off without tearing the page.
After years of testing and a few false starts, 3M sold the idea across the United States in 1980 as Post-it Notes.
What does the Post-it Note teach designers?
A failure for one problem can be a solution for another
Silver's glue failed the test it was made for. It passed a test nobody had written yet. Teams that throw away every result that misses the goal also throw away the results that might fit a different goal.
Ideas need a home while they wait
The glue survived because Silver kept talking about it and 3M gave researchers room to explore. A team can build the same habit with a simple "parking lot" list of experiments, odd findings, and half ideas that did not fit the current project.
The use came from a real, small frustration
Fry did not invent a market. He noticed his own bookmarks falling out on a Sunday morning. Good research often starts the same way: with one ordinary annoyance, watched closely.
Patience is part of the process
Years passed between the glue and the bookmark, and more years passed between the bookmark and the product. Serendipity favors teams that keep looking after the first answer disappoints them.
How can a team invite more happy accidents?
Keep a shared list of surprising results and review the list once a quarter.
Ask "What else could this be for?" whenever an experiment misses its goal.
Give people time to share work in progress with colleagues outside their own team.
Watch people use your product in their real setting, where small frustrations show up.
More from the history of design
Read how one cockpit knob ended the habit of blaming pilots, what Three Mile Island taught control room design, and the Challenger launch decision as a design lesson.
Play an Aha Moments card
Aha Moments is my card game of short design exercises. Each card names one idea, such as Craftsmanship, explains why the idea matters, and gives you exercises you can finish with a timer, a pen, and whatever is in front of you.
You can play the sample cards free, and members play every card.