Also known as the anthropic principle, the Copernican principle, or anthropic selection:
It is difficult to argue with those who appeal to “anthropic selection” to explain improbable circumstances; about all you can say is that there is a simpler explanation. But other universes are by definition beyond observation, so that the anthropic principle is untestable, and therefore unscientific. It is interesting to see how those who for many years have criticized the creationists for inventing an agent external to our universe to account for the appearance of man are now reduced to inventing other universes to explain our existence.
Which are not external, right?
– Granville Sewell, author of In the Beginning (2010)