Fermi Paradox, what's your favorite solution?

In short, the Fermi Paradox is the question, "Given how big and how old the universe is, where are all the aliens?"

Some common answers are:
1: Intelligent civilizations are just so rare we haven't seen any yet.
2: Intelligent civilizations are common enough, but we haven't been looking for them long enough, or in the right way.
3: Conspiracy that we've already made contact and just hide it.
4: We are aliens.

But there are many possible answers to this question. What do you think about it?

This page is a permanent link to the reply below and its nested replies. See all post replies »

SW-User

there are probably millions of intelligent species in the universe, some possibly very much like humans..
but there are also billions of galaxies separated by trillions of miles..
It's not surprising that we've never met another intelligent being..
technology is universally limited by the basic laws of physics..

Xuan12 · 36-40, M

@SW-User Yeah, and even if you could figure out how to travel 1000C, it'd still be a 2,500 year trip to Andromeda, the nearest galaxy to the Milky Way.