If you assume Humans are intelligent with a drive to achieve star travel, then why haven't we?
We barely visit the planets in our own solar system and we are continually reducing our radio waves. So unless someone happened to be looking at us at the right time. They might assume we don't exist.
All we know is that in the incredibly tiny parts of the universe we have looked, we haven't seen signs of US. We could have seen several signs of ET and never realized it.
We barely visit the planets in our own solar system and we are continually reducing our radio waves. So unless someone happened to be looking at us at the right time. They might assume we don't exist.
All we know is that in the incredibly tiny parts of the universe we have looked, we haven't seen signs of US. We could have seen several signs of ET and never realized it.