Oh yeah it's a totally safe assumption that if intelligent life exists elsewhere in the universe and made it all the way to Mars that they won't find us... you know... one planet over, with a century of RF radiating away from our home.
Unless of course you believe they're hiding inside Europa...
Which message are you even responding to? Maybe you should read the thread in order to understand what was being discussed. It had nothing to do with your response.
Unless of course you believe they're hiding inside Europa...