What would it matter one way or the other?
If you consider the vast distances involved, it's no surprise we haven't found anything yet. Even the evidence of our existence in the form of radio waves has only traveled around 100 light years from earth. Plus these early signals would be weak and not in all directions. If an alien civilization had a telescope powerful enough to observe the earth from 65 million light years away, they would only observe dinosaurs. And we are in an entirely different location far, far away in space now as opposed to then. Every star you see in the sky is in varying degrees of the past.
What would it matter one way or the other?
Shh...
...the politicians would want to tax them as well as us.
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