In a very interesting article, “Is God Dead, Unconscious, Evil, Impotent, Stupid … Or Just Counterfactual?“, Slavoj Zizek compares the “god hypothesis” as described by Lacan and Badiou’s “communist hypothesis”:

So does god exist or not? It does not exist as a fact, but it inexists counterfactually, which does not meant that it is simply an illusion: it is the paradox of an illusion which is immanent to reality itself, a counterfactual immanent to factuals, to our symbolic universe:

It is really fabulous that the function of the other, of the other as locus of the truth, and in a word of the only place, even though an irreducible one, that we can give to the term of Divine Being, of God to call him by his name. God is properly the locus where, if you will allow me the term, there is produced the dieu, the dieur…