What are magic messages?

A magic message is like a special letter that only certain people can read, and it changes when you send it to someone else.

Imagine you have a toy box with different colored blocks inside. You pick one block, say the red one, and give it to your friend. But instead of just giving them the red block, you also whisper a secret to it. When your friend gets that block, they can hear the same secret, but only if they have the matching key, like a blue block.

Think of magic messages as secret conversations between blocks in two toy boxes. You use one color (say red) to write a message on a block and send it to your friend’s box. Your friend uses another color (like blue) to read the message, but only if they have the right key.

If you don’t have the matching key, like using green instead of blue, you won't be able to understand what was said. It's like having a special code that only works with certain toys!

These messages are super useful for sending secrets across faraway places, just like how your blocks can talk even if they’re in different rooms, or even on different planets!