> If you then look at those outcomes together, you find that in over half of them, we are alone in the universe. Since we do not really know, anything but P=0.

> If you then look at those outcomes together, you find that in over half of them, we are alone in the universe. Since we do not really know, anything but P=0.5 should imply incorrect prior estimates. That might be more insightful than whether alien life exists or not.