L03 - Language Non-Language and Argument Flashcards
Burden of Proof
The duty to provide evidence.
Enthymeme
An argument that is technically invalid because it has at least one premise that is not explicitly stated.
False Presupposition
A proposition that must be assumed to be true for a claim or utterance to be intelligible, but which is in fact false.
Lexical (or semantic) ambiguity
A word or expression is lexically or semantically ambiguous when it can be taken to have more than one meaning.
Misquote
Saying that someone said something when they didn’t.
Naturalistic Fallacy
The attempt to derive conclusions about what is right or wrong on the basis of facts about what is natural (which are specified in non-moral language).
Paradox
An argument with an evidently false conclusion that seems valid and whose premises seem to be true.
Principle of Charity
The principle according to which we ought to engage with the best version of the argument to which we are responding.
Rhetoric
The study and use of effective communication, which focuses on the use of words to achieve a calculated emotional effect and, more generally, to persuade in non-rational ways.
Syntactic Ambiguity
A sentence is syntactically ambiguous when it can be taken to have more than one structure.
Weasel Word
A vague word that can be inserted into a claim to make it easier to escape from if it is challenged; words such as “quite”, “some” and “perhaps.”