What do we know about the universe? Nothing. It's all speculation. We still can't agree on dark matter.
What's out there? I think our current state of understanding approximates the awareness of those ancients who thought the earth was the center of the universe.
How could we be the only intelligent life? It makes no sense to me.
I wasn't waiting for the release of those documents. Just a distraction. So much going on, it gives us something else to talk about besides war, gasoline, redistricting, and the next round of immigration raids.
I would say we don't know much—or at least mainstream science doesn't. Our accepted models of physics are riddled with assumptions and falsehoods so we can pretend we know more than we do.
I sometimes think about all we could learn from a civilization that's thousands or millions of years older than us. When I was writing Alarm Clock Dawn I constantly thought about how the universe might have a way of limiting the technological evolution of those who aren't spiritually advanced enough to handle the responsibility and implications of that tech.
I think humans, as a whole, might just not be responsible enough quite yet to be accepted into the fold of those other advanced civilizations zipping around the cosmos—especially the sociopaths that run our world. I'd say a lot of ordinary folks are already "there" or almost. I was curious about the disclosure documents but wasn't holding my breath. Most documentaries or any release of information on this topic ends up being a huge build up and then an even larger disappointment.