I'm one of the people that likes to think what is out there. Maybe there have been really advanced species that came up with a way to travel at the speed of light, or could shut down for millions of years and awake at their destination as if no time had passed at all. Maybe we are thinking inside the box, try telling George Washington about computers, cell phones, and rockets. None of those inventions happened without a technical advance. And no one could have really imagined them 100 years before.
There have only been organisms capable of discovery signals or aliens for the past 50 years out of 4 billion for the age of the Earth. And I'm not sure exactly how long humans will be around on planet Earth and what advances we will discover before our extinction.
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