To qoute a simplified version of the Fermi paradox...
If Intelligent aliens existed. We would know.
We should
see their great works, Dyson spheres, black hole farms, terraformed planets. Anything.
But we
see nothing.
We should
hear their chatter, war plans, emmiserial messages, heck their owwn verison of the Archers.
But we
hear nothing.
Ofcourse its not that simple.
If we cant see or hear them, why not?
Are we not advanced enough?
Unlikely, we know what to look for.
Are we too barbaric for them to make contact with?
Doubtful, it is survival of the most adaptable afterall.
Then why?
The Universe stands at some
thirteen billion years old.
The earth itself at some four.
So why do we not see evidence -and not just some mentally questoinable person called dave- of colonisation waves? Great rents in the planet caused by some unimaginable force tearing away at our resource rich world, or even the remenants of a great battle, were a benevolant over-seer of our world defended us from the hideous von-neumann machines of the Centaurites.
Who knows, but I for one belive that the reason we see no other mind in the universe is because we
are the Ancients, the Old ones, the Xel-naga, whatever you would have.