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[–]EthnocratArcheofuturist 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

Humans have only been broadcasting radio waves for the last century or so. So that means the only detectable measure of intelligent life on our planet within our known history has only existed for that long. Which means that only those who exist within 100 light years have even a theoretical possibility of being aware of human life.

They could have had probes in our solar system for a very long time. We wouldn't even know about it.