ELI5: Explain Like I'm 5

Real line

Hey there little buddy! Do you know what a number line is? It's a line where we put the numbers in order, like 1, 2, 3, and so on.

Well, the real line is like a number line, but it has all the numbers you can think of! That means it has numbers like 0, 1, 2, and even fractions like 1/2 and 3/4. It also has really big numbers like 1,000 and even really small numbers like 0.0001.

Even if you can't think of a number, the real line's got it covered because it has infinite points. That means, no matter how much you zoom in or out on the real line, there will always be more numbers to find in between the other ones.

So the real line is a special line that has all the numbers in the world, with infinite points to help us see them all! Isn't that cool?