[kcplate]

No doubt, but its not zero.

The Fermi paradox assumes intelligent life is common. However, perhaps its not. It certainly was not rare on the one planet we know for sure life exists. Biodiversity on earth right now nears 9 million forms, with probably at least that many now extinct. So out of all of those forms of life there is one that evolved the intelligence necessary to detect life outside of this planet.

So even with the age and size of the universe…and knowing the conditions necessary for life to evolve being somewhat rare, and the conditions necessary for intelligent life to evolve where life is being also some rare given our experience here on earth, it is not a huge leap to say that while life might be common in the universe, intelligent life could be uncommon, and if it is uncommon, we could be early enough to be one of few intelligent species out there. So we may not be detecting anybody because there is nobody out there to detect…just yet. Especially given distance and time and the fact that evidence we are capable of detecting is coming to us from an intelligent species may still be quite a time away since we are seeing their past.