What is Infinity behaves differently from finite numbers?

Infinity behaves differently from finite numbers because it doesn’t follow the same rules when you add or take away things.

Imagine you have a never-ending bag of jellybeans. No matter how many you eat, there are always more in the bag. That’s infinity, it keeps going and going forever.

If you have 10 toys and get 5 more, that’s easy to count: now you have 15. But if your toy box is infinite, adding 5 more toys doesn’t change much at all, the toy box still feels just as full as before.

Think of a race where you keep running, and every time you reach a finish line, it moves further away. No matter how fast you go, there’s always another finish line ahead. That's what happens when you work with infinity, it never ends, so the rules are different from when you're counting things that do end.

You can't just count to infinity like you count to 10 or 20, it goes on forever!