Contradiction



A contradiction is a proposition, statement, or phrase making two claims that are logically incompatible, and is thus false by logical necessity. It implies both the truth and falsity of something.

For example:
 * "A = Not A"
 * "There is no objective reality." The statement makes a claim about the way the universe actually is, but at the same time claims that the universe is not actually any particular way at all.
 * "Creationism is unfalsifiable, and science has proven it false."