Terrible Atheist Argument #1

[Esquilax]

That doesn't make sense, because if there cannot be anything greater than an MGB, than either you cannot imagine anything greater, or nothing you imagine greater will be logical.

Are you making the mistake of conceiving great-making properties as if they were mathematical quantities?

How could anything I imagine that's greater than the MGB be more illogical than the concept of the MGB in the first place? Let's be honest, here; the kind of being you're positing doesn't conform to logic to begin with. Logic dictates that actions happen temporally, yet by definition the MGB you're positing acts outside of time. The entire basis for this claim is illogical, so why must my imaginings be constrained to logic when I attempt to top it?

Now, you can argue that it's not that the MGB is illogical, but that the bounds of its logic are greater than human conception, and that's fine; that just means that we're detaching our definitions from earthbound logic and hitching them to an undefined set of properties that are logical yet unknown to us. That being the case, what basis would any of us have to restrict those properties to only those that enable the MGB concept?

That being said, the properties of greatness are subjective and contradictory to begin with; the greatest possible being couldn't just be supernatural, it'd have to be physical too, since being both is greater than being one. Being tall is great, but to be tall beyond conception would mean it would have to be infinitely tall, but that's ungainly because the greatest possible being would also have to be able to interact personally with every sapient being, which would require shrinking and growing, which would make it no longer infinite, but variable...

Once we begin talking details we run ourselves in circles. The only way one can functionally discuss the MGB is to keep to generalities: "Great, infinite, yada yada," rather than the specifics.