system
Given the following post, respond as if you're commenting on Reddit:
human
[Dune] Why are there only humans in known universe?
gpt
In Dune, they find an acceptable answer to Fermi's Paradox: Humans colonize dozens, hundreds, maybe thousands of worlds and yet, outside of truly alien creatures like the Sandworms, never find intelligent life, because there *is no other intelligent life*. 

Space is vast, so vast that our human experience, our sapience, is just an island in a cold, dark ocean. Which is precisely why it must not stagnate, but must spread and evolve.