|
If there is an super-intelligent life form that has the technology to visit Earth, they would be tens of thousands of years more advanced than us. So (1) if they wanted to be seen, they'd be able to make themselves known easily or (2) if they didn't want to be seen, there's no way we'd ever detect them.
I find it telling that basically every person on earth has a HD video camera on them at all times, yet there aren't more UFO "sightings".
|