It might be a combination of many reasons, some listed in that piece.
We may even be in a blackout.
We already know that contact with less advanced cultures most often turns out badly for those cultures.
A very advanced civilization could, in my view, effect a blackout regarding Earth and our deep space probes that protects us from contamination.
Plus, for advanced civilizations to communicate in real time in the vastness of space, they would have to use a technology well beyond our understanding. In short, we wouldn't have anything that could detect that method of communication. We could be deaf and blind in an ocean of extraterrestrial communications.
They may have figured out the physics of quantum entanglement and use that to communicate in real time.
Lots of theories, but I think they're out there too.
Posted 500 day(s) ago