How can some infinities be bigger than others?
Forever's Ladder
How can some infinities be bigger than others?
Infinity sounds like the biggest thing ever — so how could one infinity be bigger than another? It's like saying one "forever" lasts longer than a different "forever." Your brain might feel a bit twisted right now. Good! That twist is exactly where the fun begins.
Let's start with something easier: counting numbers. You know — 1, 2, 3, 4, and so on, marching forward forever. No matter how high you count, there's always one more number waiting. That's infinity. Mathematicians call this set "countable infinity" because you can list the numbers one by one, even though the list never ends.
