An argument that appears to be scientific is said to be not even wrong if it cannot be falsified (i.e., tested with the possibility of being rejected) by experiment or cannot be used to make predictions about the natural world. The phrase was coined by theoretical physicist Wolfgang Pauli, who was known for his colorful objections to incorrect or sloppy thinking.[1] Rudolf Peierls writes that "a friend showed [Pauli] the paper of a young physicist which he suspected was not of great value but on which he wanted Pauli's views. Pauli remarked sadly, 'It is not even wrong.' "[2]
The phrase implies that even a wrong argument would have been better than the argument proposed, because an argument can only be found wrong after meeting the criteria for a scientific hypothesis. Arguments that are not even wrong do not meet these criteria.
The phrase "not even wrong" is often used to describe pseudoscience or bad science and is considered derogatory.[3]
"Not even wrong" has also been used, notably by Peter Woit, to mean proposed scientific theories that are well-meaning and based on current scientific knowledge, but can neither be used for prediction nor falsified. He has applied the phrase to aspects of the super string theory of physics on the grounds that, although mathematically elegant, it does not currently provide predictions or tests.[4]