One small note about the fermi Paradox, his reasoning was based on OUR communication methods, and our accomplishments as a race to date, they dont how can they find any signal we put out there? hence a simple solution to why have we not found anyone, who says that if a race if beings on another planet uses a similar communication system to us, and if
Even a different race on another planet in our Universe would have to operate under the same laws of physics. If they're not using the electromagnetic spectrum as a means of communication, what are they using? And any other advanced society would produce a radio signature from their electronics / machinery, even if they're using another form of communication.
The problem with the fermi paradox is it assumes too much about the subject its trying to disprove, eg level of technological advancement, communication methods and that another species would be looking for life on a planet other than their own like we do.
I will be the first to admit that i am not completely familar with all of the facets of the theory, i believe in 18parts, some more contradictory to others, and I found it so full of assumption that i gave up in dispair.