The numbers make it certainly within the realm of reality.
Agreed with adlabs. It's the sheer mathematical probability that suggests to me that life exists beyond our own planet. For me, it seems a bigger leap to assume it doesn't than to assume it does.
Assuming that life exists is not really an issue. As others have pointed out, it is statistically likely. Assuming they are frequently visiting our planet, given the size of the universe, is statistically unlikely.
That is, unless they put us here in the first place...
Earth, the giant terrarium and experiment. Maybe we really
should be worried about the mice.
