I read that as the point that was being made—instead of arguing cross-purposes, a theist and an atheist might actually be able to agree that the point on which they diverge is that prior, and then argue about that instead.
I read that as the point that was being made—instead of arguing cross-purposes, a theist and an atheist might actually be able to agree that the point on which they diverge is that prior, and then argue about that instead.