Quote:I forget who said it, but the phrase "in an infinite universe, everything is possible" comes to mind.
I'm not sure who said that either, but it would be more more accurately phrased as "In an infinite universe, everything is inevitable.".
However, we don't appear to exist in a infinite universe. Ours is (apparently) bounded both in terms of space and time. It is, however, mind-boggling immense, old, and will exist for a very very long time. The "Law of large numbers" applies here - events of huge statistical improbability have very good odds (approaching certainty) of happening somewhere, at some time, given enough trials.
So yeah, I don't believe that the earth tooth fairy myth has any basis in reality. That would be silly. But - I do not dismiss the possibility that such a creature could not exist on cosmological space and time scales. I'm not losing any sleep over it, though.
