Metatheory

thumb|The grand foyer of the Palais Garnier, by Charles Garnier, 1860–1875. Stylistically, it aimed for a Baroque opulence through lavishly decorated monumental structures that evoked [[Louis XIV's Versailles. However, it was not just a revival of the Baroque, being more of a synthesis of Classicist styles, like Renaissance, Baroque, Rococo, Neoclassicism etc. Thus, it is an example of eclecticism in architecture.]]

physics principle that quantum theories reproduce classical physics in the limit of large quantum numbers, formulated by Niels Bohr in 1920

Psychologism is a family of philosophical positions, according to which certain psychological facts, laws, or entities play a central role in grounding or explaining certain non-psychological facts, laws, or entities. The word was coined by Johann Eduard Erdmann as Psychologismus, being translated into English as psychologism.

A metatheory or meta-theory is a theory whose subject matter is another theory. Analyses or descriptions of an existing theory would be considered meta-theories. For mathematics and mathematical logic, a metatheory is a mathematical theory about another mathematical theory. Meta-theoretical investigations are part of the philosophy of science. The topic of metascience is an attempt to use scientific knowledge to improve the practice of science itself.

in epistemology, the reason why someone properly holds a belief, the explanation as to why the belief is a true one, or an account of how one knows what one knows

two kinds of linguistic field research

thumb|The title page of the Principia Mathematica (shortened version), an important work of metamathematics

sufficient evidence or a sufficient argument for the truth of a proposition

Contextualism, also known as epistemic contextualism, is a family of views in philosophy which emphasize the context in which an action, utterance, or expression occurs. Proponents of contextualism argue that, in some important respect, the action, utterance, or expression can only be understood relative to that context. Contextualist views hold that philosophically controversial concepts, such as "meaning P", "knowing that P", "having a reason to A", and possibly even "being true" or "being right" only have meaning relative to a specified context. Other philosophers contend that context-depen

Neopragmatism is a philosophical position developed by the American philosopher Richard Rorty. It is pragmatist in that it is influenced by the classical pragmatism of Charles Sanders Peirce, William James, and John Dewey, while also incorporating the insights of the analytic philosophy which ended up superseding that movement, hence the "neo-" in its name.

In common usage and linguistics, concision (also called conciseness, succinctness, terseness, brevity, or laconicism) is a communication principle of eliminating redundancy, generally achieved by using as few words as possible in a sentence while preserving its meaning. More generally, it is achieved through the omission of parts that impart information that was already given, that is obvious or that is irrelevant. Outside of linguistics, a message may be similarly "dense" in other forms of communication.

ability of a hypothesis or theory to effectively explain the subject matter it pertains to

branch of sociology

theory in the philosophy of language that a certain part of language (e.g. a term, a complete sentence) can only be understood through its relations to a (previously understood) larger segment of language