Darwin's Extraterrestrials

[Humanist_Activist]

13. Certainly possible...

We ourselves are broadcasting less into the void than we did in the past, our signals break down much quicker, are more focused and powerful in other ways, and less "leaks out". And that's with standard radio waves. Assuming other civilizations exist, they would have most likely followed a similar curve of technological progress and use of physics. Perhaps a century or two of radio broadcasting that can be heard for light years around, and then mostly silence or a murmur.