Please don't post snarky dismissals to HN. They're corrosive of the higher-quality discussion we're hoping for here, especially because they generate replies that end up taking the thread in a less interesting direction.
Maybe, but it's interesting because I had quite a few discussions with my kids about infinity. It came up when playing the "how much do I love you" game. I introduced infinity, and from there I was able to teach them a little about it. They were very young and I am still impressed with how easily they grasped some of the concepts.
Do you think it's possible that they accepted your ideas of infinity in a dogmatic sort of way, similar to how many young children accept god? I remember first having discussions with my father about infinity as young as 6, but I didn't really start exploring infinity for myself until my mid teens. It would be interesting to see how your kids thoughts change as they mature.
I do think they accepted it in a dogmatic way. Incidentally, I am raising our children Catholic so it's an idea that fits pretty well with the idea of God, the Holy Trinity, and all that. Three in One, yet one is the Father and the other is the Son? Yes, dear. Oh, ok. <grin>