3 ms·

I don't think that's a fair comparison. Even though humans are limited in our senses, we've built machines to see and monitor every frequency of light. And we'r

I don't think that's a fair comparison. Even though humans are limited in our senses, we've built machines to see and monitor every frequency of light. And we're also really good at finding patterns. If there was an active intelligence that had colonized most of the galaxy, we'd know it. (Unless the intelligence was actively trying to hide from us?)

monocasa 9y ago
Why would we? Our own EM emissions drop below the noise floor at only a few light years out, and AFAIK our total emissions have been going down as we transition away from pure broadcast to cell and wifi. Even assuming that there was a large civilization out there that communicated via EM across interstellar distances, they'd almost certainly use point to point lasers to keep the SNR usable.