What are possible worlds?

Possible worlds are like imaginary lands you can visit when you close your eyes and dream.

Imagine you have a box full of different toys, some are cars, some are robots, some are dragons. Each toy is a whole new world that you can go to. When you pick one up, you're in that world for a while, maybe it's a world where everyone floats or a world made entirely of candy. You can visit as many as you want! These are your possible worlds.

Sometimes, possible worlds are like pages in a storybook. One page might be about a boy who flies to the moon, and another could be about a girl who talks to trees. Each page is a different world, but they’re all part of the same big book, just like how you can imagine many different stories from one book.

The best part is that these worlds aren’t far away, they’re right here, inside your head! You don't need a spaceship to visit them. Just close your eyes and let your imagination take over.