The Fermi paradox has been a thorn in the side of cosmologists for nearly 70 years now , since Enrico Fermi proposed the conundrum of why it is in a Galaxy of so many possible planets that we haven't heard a peep from any near by or remote civilizations. I am a proponent of a combination of reasons 8 and 11 on this list of reasons why we don't hear anything as simply being that we are one of the earliest civilizations in the ensemble of civilizations that are extant in the Galaxy and have survived sufficient extinction events to even get to the point of producing radio waves coupled with the fact that the way we communicate now is likely not how advanced civilizations communicate, let me explain...
) and in that volume lie the planets that have a chance of harboring civilizations as advanced as ours.....but even within that subset of viable civilizations...of those that get to discovering radio transmission (simple modulation of EM fields) there is still the sphere of silence within which sufficient attenuation of the early EM based signals of those civilizations fall below noise....effectively making those civilizations (like ours!) invisible in the EM domain even to other advanced civilizations who may still be using EM to communicate (but that is not at all given).
Originally posted on Linkedin