[kcmastrpc]

I’m sure there are plenty of civilizations that have done this, but on the time scale of the universe no one happens to look at just the right moment.

[Voultapher]

But wouldn't the size and age of the universe also imply that someone has looked at just the right moment somewhere somewhen.

[drexlspivey]

Don’t radio waves weaken proportionally to the square of the distance? No one would be able to detect them past a (relatively) small distance.