A sticky note is a type of sticky note with a sticky back on the back of the sticker. Generally small in size.
The discovery of Post-it note is very accidental. Originally, scientists were trying to study a very sticky glue, but found that the weak glue was weak. Just when everyone was frustrated, a person from 3M found its true value from this experiment. As a result, this has become a business opportunity that can earn billions of dollars.