How to beat a presupp at their own game

[Superjock]

The chat server is filled with presupps and the number one objection for atheism that I hear is what grounds our atheism?

Very simple.   Atheism is "grounded" when we have no personal impetus to believe in gods.  That's all that the word means, so that's all that it takes.  

What grounds do we have for facts and knowledge?

The same grounds for facts and knowledge that anyone else has, whatever those are - for better and for worse.  Adding or removing a divine friend has no effect on knowledge claims or their basis.

How can we know anything in a godless world?

The same way we know things, if we know things, in a god-ed world.  To say that we know something is, like atheism or theism, primarily, a claim about ourselves - not a claim about a god.  In a godless or god-ed world we either know the thing, anything, or we do not.  Really, though, the questioner would have to be more specific.  You know your own name and what ice cream tastes like for reasons not at all similar to how you know that william lead the norman conquest.

From their view, God is the foundation of knowledge. It's self-justifying - how do they know? God revealed it through special and divine revelation and therefore they cannot be wrong. So to deny this, means that atheists are appealing to a non-personal universe (??) (I'm probably not stating this argument 100%, I"m tired and haven't slept)

If you say the universe is my starting point as an atheist, they'll say what grounds the universe?

One of the primary presupps there is Darth Darkins. Anyone know how to dismantle this type of argument?

Well, rather than arguing this point, ask them to explain what they mean by it.  How, in what way, is god the foundation of knowledge?  Who's knowledge?  What knowledge?  The foundation of knowledge of my own name or what ice cream tastes like?  You'll reach a point where..either what they have to say on the subject convinces you, or it does not..and then you have an even more specific answer for the very first question.

If a person has attempted and failed to convince you of a gods existence..they too are now part of the "grounding" of your atheism.  Congratulate them on a job well done.

Thanks for your reply! The answer I've heard from Darth is that whatever conforms to the mind of God is knowledge. You can only know that it is true if it conforms to the mind of God. And God has revealed himself through divine and special revelation in such a way that I know it cannot be false. He is also omniscient. This is his justication.

That is sort of the gist of it. Now Darth will say, sure, you can deny my position, but then how does "insert whatever" from the atheist have any ultimate grounding because without God you're living in a world of chance, and you don't know what is possible or impossible etc etc. It's completely arbitrary.

Side note : I'm may not be framing this in the best way. It's all over Youtube and Discord though. The argument always goes the same way, but it hurts my head just thinking about it.