The curiosity gap refers to the space between what we know and what we want to know.
This psychological phenomenon is often used in storytelling, marketing, and education. By revealing just enough to make the audience interested, but withholding full information, it motivates them to dig deeper or take action to close the gap. For example, headlines that tease an interesting fact without giving the full story exploit the curiosity gap to encourage people to click and learn more.
Ref: https://youtu.be/IAo0wA9USF8?si=Fut_qbMPjzn0IhEi&t=1564