Just to make sure we're on the same page, here's the definition of faith from Merriam Webster that I think applies:
a(1): belief and trust in and loyalty to God
(2): belief in the traditional doctrines of a religion
b(1): firm belief in something for which there is no proof
(2): complete trust
The first thing is you don't have to "believe" in the idea I outlined to use it. It's just a condition under which a probabilistic explanation doesn't account for the lack of observed intelligent life. And, it hasn't been disproven. So that's a way any probabilistic model is incomplete.
Second, we could come to seriously believe in this theory through consensus direct interactions with these higher powers. That wouldn't require a leap of faith at all. If robots showed up and were like "we were sent by your creators, they say you're doing great" and gave us a second moon as a present, that would be very strong proof of more powerful beings.
Second, we could come to seriously believe in this theory through consensus direct interactions with these higher powers. That wouldn't require a leap of faith at all. If robots showed up and were like "we were sent by your creators, they say you're doing great" and gave us a second moon as a present, that would be very strong proof of more powerful beings.