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Rudolf Dreikurs (February 8, 1897, Vienna – May 25, 1972, Chicago) was an Austrian psychiatrist and educator who developed psychologist Alfred Adler's system of individual psychology into a pragmatic method for understanding the purposes of reprehensible behaviour in children and for stimulating cooperative behaviour without punishment or reward.
The multi-sentence version of the liar paradox generalizes to any circular sequence of such statements (wherein the last statement asserts the truth/falsity of the first statement), provided there are an odd number of statements asserting the falsity of their successor; the following is a three-sentence version, with each statement asserting ...
The Polish logician Alfred Tarski identified three features of an adequate characterization of entailment: (1) The logical consequence relation relies on the logical form of the sentences: (2) The relation is a priori, i.e., it can be determined with or without regard to empirical evidence (sense experience); and (3) The logical consequence ...
Lying in a court of law, for instance, is a criminal offense . [37] Hannah Arendt spoke about extraordinary cases in which an entire society is being lied to consistently. She said that the consequences of such lying are "not that you believe the lies, but rather that nobody believes anything any longer.
This is the canonical self-referential paradox. Also "Is the answer to this question 'no'?", and "I'm lying." Card paradox: "The next statement is true. The previous statement is false." A variant of the liar paradox in which neither of the sentences employs (direct) self-reference, instead this is a case of circular reference.
Images of Kant and Constant. "On a Supposed Right to Tell Lies from Benevolent Motives" (sometimes translated On a Supposed Right to Lie because of Philanthropic Concerns) (German: Über ein vermeintes Recht aus Menschenliebe zu lügen) is a 1797 essay by the philosopher Immanuel Kant in which the author discusses radical honesty.
In one classical formulation, truth is defined as the good of logic, where logic is a normative science, that is, an inquiry into a good or a value that seeks knowledge of it and the means to achieve it. In this view, truth cannot be discussed to much effect outside the context of inquiry, knowledge, and logic, all very broadly considered.
Epimenides from "Promptuarii Iconum Insigniorum"The Epimenides paradox reveals a problem with self-reference in logic.It is named after the Cretan philosopher Epimenides of Knossos (alive circa 600 BC) who is credited with the original statement. [1]