Acronym it. This has become such a problem that it is even evaluated at the level of medical academies such as the American Academy of Dermatology. Acronyms are often taught as mnemonic devices, for example in physics the colors of the visible spectrum are said to be "ROY G. BIV" ("red-orange-yellow-green-blue-indigo-violet"). They are also used as mental checklists, for example in aviation: "GUMPS", which is "Gas-Undercarriage-Mixture-Propeller-Seatbelts". Other examples of mnemonic acronyms are "CAN SLIM", and "PAVPANIC" as well as "PEMDAS". It is not uncommon for acronyms to be cited in a kind of false etymology, called a "folk etymology", for a
Communication Theory as a Field the constitutive metamodel is less than apparent." By relying upon this case study Myers sabotages his argument for establishing an absolute truth criteria, demonstrating that "we would gain little by holding on to such a criterion." After this exchange between Myers and Craig, there was no real disciplinary discussion of the metamodel besides textbooks which used the metamodel as a framework for introducing the field. Then in 2004 in an unpublished dissertation, which was mentioned in a footnote in his 2005 "The road not Taken: William James's Radical Empiricism and Communication Theory," Russill proposed the possibly of pragmatism as an