Do you believe there are species that have mastered FTL travel?

[nadinbrzezinski]

121. Alas the Fermi paradox

But what we know already of exoplanets it makes life, even intelligent life, possible. Now what that life will look like...twice earth's gravity will lead to different evolutionary results, IMO.

Here is the problem, right now we are using radio to try to find our neighbors. Assume for a second they are there, we have only "gone live" for seventy years or so, and have been listening for thirty.

We are also listening to a single channel at a time. (Technology to be honest will allow us to "scan" the way my police scanner does in ten years tops).

My theory is very much with Sagan's. first they need to survive the terrible teen years, where we are. But after that, they might no longer use radio, so go quiet again.

Purely speculative, let's assume for a second they are visiting earth. If they are, the technology is so far ahead of us, that stealth and all that is very possible. Why? We must be entertaining, the same way an Amazonian tribe is to American anthropologists. We can't hide our presence from our subjects in the Amazon, but I contend anybody who is crossing those vast distances has a choice to remain fully hidden from view.

I recommend looking at the Drake equation. Yes, you can solve it to zero by having any variable at zero. The more we know the less likely it will be zero.