There’s also the possibility that the universe is filled with aliens, but they are quiet in order to hide themselves from a more advanced alien civilization or UFAI. And this advanced civilization or UFAI acts as a Great Filter to those who do not have the sense to conceal themselves from it. This would assume that somehow aliens had a way of detecting the presence of this threat, perhaps by intercepting messages from alien civilizations before they were destroyed by it. Either that, or there is no way of detecting the aliens or UFAI, and all civilizations are doomed to be destroyed by it as soon as they start emitting radio signals.
There’s also the possibility that the universe is filled with aliens, but they are quiet in order to hide themselves from a more advanced alien civilization or UFAI. And this advanced civilization or UFAI acts as a Great Filter to those who do not have the sense to conceal themselves from it. This would assume that somehow aliens had a way of detecting the presence of this threat, perhaps by intercepting messages from alien civilizations before they were destroyed by it. Either that, or there is no way of detecting the aliens or UFAI, and all civilizations are doomed to be destroyed by it as soon as they start emitting radio signals.
Good point. So The Silence of the Space is a sign of some kind of threat in the sky.