>>13662073It only takes one bit of information to communicate "I am". Of course "I" could be a space fart, but amping up the power restricts the number of possible sources, which then gives good reason to point your telescopes in that direction.
>>13667695I'd argue that it's less an arrow and more an amplification issue. All it takes is a single intelligent species spontaneously emerging to completely change the face of a planet or even solar system.
