I'm in a Facebook discussion on a page that includes theists and atheists regarding "something coming from nothing".

We've yet to make it very far in the discussion because he keeps dodging my "what do you mean by nothing?"

If at some point he answers in the way I'm thinking he will (*nothing vs no thing) I commonly point out to people trying to advance this argument that a claim about true nothing is a useless claim since we don't have a nothing to be able to run tests against and form accurate hypotheses and theoretical models.

Anyone else have discussions about "something coming from nothing"? What are your preferred talking points?