The Great Filter.

The Great Filter is the logical answer to thehe Fermi Paradox.  It’s the one explanation that cannot be reasoned away.

The Milky Way is 13.2 billion years old.  it would require one sentient species in the galaxy not named “humanity” only 10 million years to colonize the entire galaxy, at sub-light speeds.

By extension, If multiple civilizations once existed, evidence of that should be everywhere.  Because there is not, this paradox is called, “The Great Silence.”  We infer one of only two possibilities:

1.  No intelligent beings have ever existed, or, 

2. Intelligent beings destroy themselves.

Modern humanity has arrived to , The Great Filter.  Noesis challenges humanity to DEFEAT The Great Filter, to become the only civilization to ever emerge as sustainable.