A closed-circle argument is one that is unfalsifiable.

Psychoanalytic PsychoanalysisFrom Greek: + . is a set of theories and therapeutic techniques"What is psychoanalysis? Of course, one is supposed to answer that it is many things — a theory, a research method, a therapy, a body of knowledge. In what might be ...

theory, for example, is held up by the proponents of Karl Popper as an example of an ideology rather than a

science Science is a systematic endeavor that Scientific method, builds and organizes knowledge in the form of Testability, testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earli ...

. A patient regarded by his psychoanalyst as "

in denial Denial, in ordinary English usage, has at least three meanings: asserting that any particular statement or allegation is not true (which might be accurate or inaccurate); the refusal of a request; and asserting that a true statement is not true. ...

" about his

sexual orientation Sexual orientation is an enduring pattern of romantic or sexual attraction (or a combination of these) to persons of the opposite sex or gender, the same sex or gender, or to both sexes or more than one gender. These attractions are generally ...

may be viewed as confirming he is

homosexual Homosexuality is romantic attraction, sexual attraction, or sexual behavior between members of the same sex or gender. As a sexual orientation, homosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" to pe ...

simply by denying that he is; and if he has had sex with women, he may be accused of trying to buttress his denials. In other words, there is no way the patient could convincingly demonstrate his heterosexuality to his analyst. This is an example of what Popper called a "closed circle": The proposition that the patient is homosexual is not falsifiable. Closed-circle theory is sometimes used to denote a relativist,

anti-realist In analytic philosophy, anti-realism is a position which encompasses many varieties such as metaphysical, mathematical, semantic, scientific, moral and epistemic. The term was first articulated by British philosopher Michael Dummett in an argument ...

philosophy of science, such that different groups may have different self-consistent truth claims about the natural world.

References

Philosophical arguments Philosophy of science {{science-philo-stub