The other part of that overlap is whether they are using radio signals. I think a lot about the fact that there may very well be other ways of wireless signal transmission that don’t require radio (gravitational waves are one example though I’m not sure if I would expect those to be used for data transmission).
200 years ago no one knew radio communications were possible. We still don’t understand quantum entanglement. Our understanding of physics, while more advanced than the past, is still clearly limited. We may find that there are better ways than radio to transmit data, and this could explain why our radio surveys have so far not detected extraterrestrial data packets (as far as we can tell).
200 years ago no one knew radio communications were possible. We still don’t understand quantum entanglement. Our understanding of physics, while more advanced than the past, is still clearly limited. We may find that there are better ways than radio to transmit data, and this could explain why our radio surveys have so far not detected extraterrestrial data packets (as far as we can tell).