You: The laws of nature are not mathematically perfect at all. Those equations that look so simple to you are just mathematical shorthand for incredibly complex concepts. Pi has an infinite number of digits after the decimal point, the speed of light isn't a nice round number, and physics problems have easy answers only in high-school textbooks, so if you mean to imply that no simpler universal laws could be designed, I beg to differ.

You seem excited by the fact that the laws of the universe do not change, but this does not imply God. What is wrong with saying that we live in a completely natural universe with invariant laws? As for the growing ease with that we can explain the universe, that is nothing more than a comment on humanities inventiveness in finding patterns and exploiting them. It would be hard to conceive of a universe with invariant laws that humans couldn't express mathematically, given time.

Aaron: You are completely missing the point. It is true that not all constants end at the decimal point, and I am sorry for implying that they do. Such things are a function of our numbering and measuring systems, not of the true nature of things.

The point I was trying to make is that in most types of universe one could imagine, ones in that the strength of gravity diminishes linearly or water boils at a lower temperature, life would be impossible. How could we be so lucky to have a universe where the workings of the universe are fine-tuned in such a way that we can live comfortably? How can you believe that this state of affair could come about against horrific odds without divine guidance?

You: I will answer your question with a question. If the universe were not one in that we could exist, who would be here to ask your question? Universes may sprout up all the time, millions and millions of them, but only in those that intelligent life evolves can the question "why are we here?" be voiced. We exist in such a universe because we could not exist in any other.

Aaron: So you are saying that humanity exists necessarily. Isn't that a bit egocentric?

You: I am not saying any such thing. It is entirely possible for no intelligent beings to ever exist, but if they do exist then they must be in "fine tuned" universes.

Aaron: Well, even if I cannot get you to admit that there is only one universe and that the laws it obeys are part of the divine plan, you cannot deny that nature itself is perfectly balanced.