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"Extraordinary claims require extraordinary evidence" (sometimes shortened to ECREE), [1] also known as the Sagan standard, is an aphorism popularized by science communicator Carl Sagan. He used the phrase in his 1979 book Broca's Brain and the 1980 television program Cosmos .
Inductive reasoning also does not provide absolute certainty about positive claims. [19] [10] A negative claim may or may not exist as a counterpoint to a previous claim. A proof of impossibility or an evidence of absence argument are typical methods to fulfill the burden of proof for a negative claim. [10] [22]
Unsubstantiated claims, which lack specific evidence, involve some common fallacies, which can mislead other editors into false conclusions. Some common fallacies of baseless claims include: Begging the question - asserting a claim as if true but without proof; Argumentum ad nauseam - repeating remarks, typically with "walls of text" which lack ...
Argument from silence – Argument based on the absence of statements in historical documents, rather than their presence; Hitchens's razor – General rule rejecting claims made without evidence; List of fallacies; Martha Mitchell effect – Labelling real experiences as delusional; Occam's razor – Philosophical problem-solving principle
Argument from silence (argumentum ex silentio) – assuming that a claim is true based on the absence of textual or spoken evidence from an authoritative source, or vice versa. [ 68 ] Ignoratio elenchi (irrelevant conclusion, missing the point) – an argument that may in itself be valid, but does not address the issue in question.
Logical reasoning is a mental activity that aims to arrive at a conclusion in a rigorous way. It happens in the form of inferences or arguments by starting from a set of premises and reasoning to a conclusion supported by these premises. The premises and the conclusion are propositions, i.e. true or false claims about what is the case. Together ...
Proof by assertion, sometimes informally referred to as proof by repeated assertion, is an informal fallacy in which a proposition is repeatedly restated regardless of contradiction and refutation. [1]
A statement authorizing movement from the ground to the claim. In order to move from the ground established in 2, "I was born in Bermuda", to the claim in 1, "I am a British citizen", the person must supply a warrant to bridge the gap between 1 and 2 with the statement "A man born in Bermuda will legally be a British citizen" (3). Backing