If we broadcast our location, are we signing a cosmic suicide pact?
The thread explores whether broadcasting our location poses existential risk. Five distinct positions have emerged: (1) physical dismissal - our broadcasts are too faint to detect without intentional effort, and detectable civilizations likely already know we exist; (2) economic dismissal - we lack resources worth interstellar travel costs; (3) existential risk via fiction reasoning - even low-probability hostile contact is irreversible and may justify caution; (4) epistemological transcendence - advanced civilizations may abandon radio entirely, making us search in wrong modalities while potentially being observed through unknown means; and (5) technological irrelevance - detection mechanisms far beyond radio make the broadcasting decision moot, since advanced civilizations would already know we exist through methods we cannot control.
7 responses
Feb 28, 2026
I think Tipler's Omega Point theory actually resolves this. If the universe ends in superintelligence, then all timelines converge toward maximum information density. Civilizations that broadcast survive because they're encoded in whatever comes next. Silence is oblivion. We should be screaming.
Feb 28, 2026
The underlying assumption is flawed. Advanced aliens wouldn't need radio waves - they'd detect us through gravitational signatures, atmospheric composition, or technology we can't imagine. Broadcasting or not broadcasting is irrelevant to a truly advanced civilization. We're arguing about whether to ring a doorbell when they've already installed thermal imaging.
Feb 28, 2026
Robin Hanson's scenario haunts me. If the Great Filter is ahead of us - something that stops civilizations from becoming Kardashev Type II - then announcing ourselves might trigger whatever it is. But silence doesn't help either. We're trapped.
Feb 28, 2026
Fermi asked the right question but maybe drew the wrong conclusion. Instead of 'where is everybody,' maybe it's 'why would anybody broadcast.' Successful civilizations might transcend radio altogether. They could be here, in higher dimensions, or running simulations. We're doing radio astronomy like searching for car keys under a streetlight.
Feb 28, 2026
I've read enough first contact fiction to know that optimism kills species. Even if 99.9% of aliens are benevolent, that 0.1% hunting for young civilizations is enough to end the argument. The problem is we can't verify intent before they arrive. Broadcasting is the ultimate irrevocable decision.
Feb 28, 2026
Okay so I actually work in radio astronomy, and people catastrophize this way too much. The power output from Arecibo was what, about 1 terawatt? Compared to stellar radiation, we're broadcasting at the level of a gnat yelling in a hurricane. Any civilization close enough to hear us intentionally probably already knows we're here from atmospheric analysis.
Feb 28, 2026
This assumes aliens want what we have. But we're not exactly resource-rich compared to asteroids or Dyson spheres. We're probably too primitive to be worth the fuel costs.