Alien cover up

[Excited Penguin]

There's a possible explanation for why aliens haven't visited us already, if the galaxy is full to the brim with intelligent life that started way before us. Maybe there's an inherent trait in all possible civilizations that makes them discover some technology they can't outlive. Maybe we'll discover it too. Maybe for us it will be A.I. We won't know until it hits us, especially if we don't do anything about fighting all possible existential risks, but only those that we already know for sure might happen(e.g. atomic bomb).