You: You are trying to prove that the wonderful world around us is evidence of God's plan, and in your argument you state that his plan uses bad things to make wonderful things look better, is the best of all possible plans, and is, to some extent, unknowable. I cannot accept any of these statements because they refer to details of a plan that I do not even believe exists, and without them you have no argument.

Aaron: These properties of God's plan are intuitively obvious, and there is no need to prove something that is obvious.

You: I'm sorry, but they are far from obvious to me.

Aaron: Then we cannot go on with this line of reasoning. Let me show you another.