A type of puzzle in which the aim is to reconstruct a picture that has been cut (originally, with a jigsaw) into many small interlocking pieces.
An unanswerable question or difficult puzzle, particularly one which leads to a deeper truth.
A claim that two apparently contradictory ideas are true.
The use of counterintuitive or contradictory statements (paradoxes) in speech or writing.
An apparently self-contradictory statement, which can only be true if it is false, and vice versa.
A state in which one is logically compelled to contradict oneself.
A person or thing having contradictory properties.
A counterintuitive conclusion or outcome.
A thing involving contradictory yet interrelated elements that exist simultaneously and persist over time.
The practice of giving instructions that are opposed to the therapist's actual intent, with the intention that the client will disobey or be unable to obey.