RE: Alien cover up
December 27, 2015 at 12:16 pm
(This post was last modified: December 27, 2015 at 12:20 pm by Anomalocaris.)
Maybe the aliens visited us many times in earth's 4.5 billion years. But to have a good chance for aliens to have visited us during the living memory of modern men, there would have to be on average more than 1 visit per 10,000 years. This would mean aliens would have to have visited more than 6,000 times since the demise of dinosaurs, or more than 50,000 times since the Cambrian explosion.
See, it's statistically very probable for us to have missed alien visitation completely even if aliens, on a cosmological time scale, actually frequently visited earth, say 10,000 times since when trilobites crawled on the sea floors. Not having seen aliens, even if it is proof that aliens have not visited during the time when we were around to see and record them, is still not a statistically weighty evidence for whether aliens ever visited.
The other question of what evidence they may have left from past visit? We have no way of knowing why they visited, how they visited, and what they did while visiting, so we have no way of speculating what sort of evidence they ought to have left had they visited. Perhaps each visit was just an orbital remote sensing survey. Perhaps the colonized a whole continent, but subsequently the surface they trod upon all eroded away and the debris have mostly subducted into the mantle.
We simply have no evidence to say one way or the other.
See, it's statistically very probable for us to have missed alien visitation completely even if aliens, on a cosmological time scale, actually frequently visited earth, say 10,000 times since when trilobites crawled on the sea floors. Not having seen aliens, even if it is proof that aliens have not visited during the time when we were around to see and record them, is still not a statistically weighty evidence for whether aliens ever visited.
The other question of what evidence they may have left from past visit? We have no way of knowing why they visited, how they visited, and what they did while visiting, so we have no way of speculating what sort of evidence they ought to have left had they visited. Perhaps each visit was just an orbital remote sensing survey. Perhaps the colonized a whole continent, but subsequently the surface they trod upon all eroded away and the debris have mostly subducted into the mantle.
We simply have no evidence to say one way or the other.
