From the Wikipedia article on “Elf”:
From a scientific viewpoint, elves are not considered objectively real.
2. Hall (2007), pp. 8–9, 168–69.
One likes to imagine this very careful wording and accompanying citation as the result of a three-month edit war which finally sent a Wikipedian looking for a reliable up-to-date reference that explicitly stated that elves are not real and explained exactly what was meant by “not real.”