So, is there a chance that there's a god out there? Sure. Now all that matters is whether you think that chance is high or low, or even if it is low, that you have hope and act how you believe. A lot of people don't see the probability as a high one, and don't have hope that a god exists, other people believe that there is a high chance and act accordingly by praying, and abiding by the word of god and having faith. Science is just a tool that deals with universally accepted data that has a sufficient probability of being correct, you can't discern whether god exists or not because there's no evidence for or against. So, like he said, nobody has the authority to definitively say that god exists or not, but since we still have to act and the only truth is that there's a chance, we must analyze that chance and any consequences, which is entirely subjective.