The amount of "influence" we have had to our galaxy, let alone the universe is so minuscule, that the probability of any advanced civilizations even if they were looking, seeing us in real time is so remote. Let's not forget that the light we see from distant stars and planets is many many light years old. Lots can go on in the intervals. Let's not forget that space is appearing to be expanding faster than the speed of light.
Gonna say it again, there might be something out there, but still, they haven't been here.
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