How would someone living in the dark ages look for intelligent life if they can't imagine the existence of wireless communications beyond a mythical transferenc

How would someone living in the dark ages look for intelligent life if they can't imagine the existence of wireless communications beyond a mythical transference of thoughts from human to human. Most of this is theoretical, but all it proves is our lack of understanding is still ever present, and we're all still just a bunch of ignorant fools trying to make sense of it all. I think we should just focus our energy into bigger things, and allow the technological breakthroughs as they will come with time. We just have to put our focus on bigger better & more interesting pursuits and stop blowing people up. Stop destroying civilizations, and start to accept civilizations as they exist. The more we destroy ourselves the harder it becomes for us to overall advance enough people to create the ever necessary brain trust of the planet to build these new sophisticated technologies to maybe one day find a way to decode what was once maybe thought non-existent. Maybe neutrinos are already used to communicate from light-years away, we just don't have enough advanced technology to decode it. We're not there yet, maybe we need fusion technology before other technology makes more sense to us, maybe fusion technology is what brings us to insane speeds in space that we cannot replicate currently since we haven't mastered it yet. Once again, we argue about the unknown, and only create factions of people hating on others who don't realize they're just ignorant.