Mmmm, well how about we put another 'earth' on that picture. On the other side of the Milky Way, not even on another galaxy and draw exactly the same little 200 light year circle at the same present time.
By the time both our little circles of transmission even met, let alone arrived at the other planet both civilisation will have probably long perished ...
Anything that will ever arrive here from that kind of distance will only be the signal of a long gone race methinks.
Still it's fun to even consider it and you never know what the future might bring. I reckon there has to be something out there somewhere but possible extraterrestrial fungii and slime make for quiet neighbours.
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