What was the original 'failed' purpose of the adhesive that would eventually be used in Post-it Notes when it was first developed at 3M in 1968?

Some of the most revolutionary products began as accidents or were initially rejected by the market. The Post-it Note represents one of the most fascinating invention stories in retail history - a 'failed' adhesive that transformed into a billion-dollar product. This poll tests your knowledge about the serendipitous discovery that changed office supplies forever and created an entirely new product category.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

A super-strong glue for aerospace applications
A permanent adhesive for bookbinding that wouldn't damage pages
A repositionable but permanent adhesive for bulletin boards
A super-strong adhesive for aircraft manufacturing