Every thing, yes, but the things aren't what make math interesting. It's the way those things relate to each other that is so interesting. The patterns. The co

Every thing, yes, but the things aren't what make math interesting. It's the way those things relate to each other that is so interesting. The patterns. The connections. It's the same with this discussion about infinity. The real substance in most of this article isn't infinity: it's set theory. Infinity is just being used as the hook to grab your attention.