The real challenge is to work out what aliens might actually be like.
It is not clear that intelligence has any long-term survival value.
I may contradict myself, but at least I don't contradict myself.
It would be very difficult to explain why the universe should have begun in just this way, except as the act of a God who intended to create beings like us.
One can't predict the weather more than a few days in advance.
A lot of prizes have been awarded for showing the universe is not as simple as we might have thought.