The argument assumes Axiom S5, which is often fine as long as you're consistent with the axioms you use.
Personally, I don't bother with objections related to S55 axiom and such. I just look at the first premise and see that's where the primary issue is. Either you accept the possibility of a maximally great being or you don't. If you do, the argument pretty much works. If you don't, then it's not going to be compelling to you.
Personally, I don't bother with objections related to S55 axiom and such. I just look at the first premise and see that's where the primary issue is. Either you accept the possibility of a maximally great being or you don't. If you do, the argument pretty much works. If you don't, then it's not going to be compelling to you.
