What is Shared knowledge?

Shared knowledge is when people know the same thing because they've all learned it together.

Imagine you and your friends are playing a game where you have to guess what’s in a box. If no one tells you anything, everyone might think there's a toy inside, but if someone opens the box and shows you that it's actually a book, then everyone knows now that it's a book. That's shared knowledge, it’s like when all of you learn something at the same time.

Think about being in a classroom. The teacher says, "Today we're learning about clouds." At first, only the teacher knows about clouds. But once she starts explaining and drawing pictures on the board, all the students start to understand what clouds are. Now everyone has shared knowledge, they all know the same thing because they learned it together.

Or think of your family making cookies every Sunday. At first, only Grandma knows how to make them. But as she teaches you and your brother step by step, now all of you can make the cookies on your own. That’s shared knowledge, it's like when a secret becomes something everyone knows.