So if you pick an observation by a single observer at random, it will frequently be of the expanding universe, which has far more observers.

ECONOMIST: The universe, it appears, may not be alone

He calls them Black Swans, after the philosopher Karl Popper's observation that only a single black swan is required to falsify the theory that "all swans are white" even when there are thousands of white swans in evidence.

WSJ: Shattering the Bell Curve