Pseudoscience is a methodology, belief, or practice that is claimed to be
scientific, or that is made to appear to be scientific, but which does not adhere to an appropriate
scientific methodology, lacks supporting evidence or plausibility, or otherwise lacks scientific status.
[1] The term comes from the
Greek prefix
pseudo- (false or pretending) and
science (from Latin
scientia, meaning "knowledge"). An early recorded use of the term was in 1843 by the French physiologist
François Magendie.
[2]
As taught in certain introductory science classes, pseudoscience is any subject that appears superficially to be scientific, or whose proponents state that it is scientific, but which nevertheless contravenes the
testability requirement or substantially deviates from other fundamental aspects of the scientific method.
[3] The term is inherently pejorative, because it is used to assert that something is being inaccurately or deceptively portrayed as science, and those labeled as practicing or advocating it normally dispute the characterization