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  2. List of paradoxes - Wikipedia

    en.wikipedia.org/wiki/List_of_paradoxes

    Paradox of plenty: Countries with an abundance of natural resources tend to have less economic growth and worse development outcomes than countries with fewer natural resources. The paradox of banknotes : Cash transactions have decreased since the 1940s but the demand of banknotes has increased significantly since the early 2000s.

  3. Grelling–Nelson paradox - Wikipedia

    en.wikipedia.org/wiki/Grelling–Nelson_paradox

    The Grelling–Nelson paradox arises from the question of whether the term "non-self-descriptive" is self-descriptive. It was formulated in 1908 by Kurt Grelling and Leonard Nelson , and is sometimes mistakenly attributed to the German philosopher and mathematician Hermann Weyl [ 1 ] thus occasionally called Weyl's paradox or Grelling's paradox .

  4. Paradox - Wikipedia

    en.wikipedia.org/wiki/Paradox

    A paradox is a logically self-contradictory ... was instrumental in the development of modern ... A paradoxical reaction to a drug is the opposite of what ...

  5. Polanyi's paradox - Wikipedia

    en.wikipedia.org/wiki/Polanyi's_paradox

    Polanyi's paradox, named in honour of the British-Hungarian philosopher Michael Polanyi, is the theory that human knowledge of how the world functions and of our own capability are, to a large extent, beyond our explicit understanding.

  6. Zeno's paradoxes - Wikipedia

    en.wikipedia.org/wiki/Zeno's_paradoxes

    [1] [2] Diogenes Laërtius, citing Favorinus, says that Zeno's teacher Parmenides was the first to introduce the paradox of Achilles and the tortoise. But in a later passage, Laërtius attributes the origin of the paradox to Zeno, explaining that Favorinus disagrees. [3] Modern academics attribute the paradox to Zeno. [1] [2]

  7. Paradoxical reaction - Wikipedia

    en.wikipedia.org/wiki/Paradoxical_reaction

    A paradoxical reaction (or paradoxical effect) is an effect of a chemical substance, such as a medical drug, that is opposite to what would usually be expected. An example of a paradoxical reaction is pain caused by a pain relief medication .

  8. Barbershop paradox - Wikipedia

    en.wikipedia.org/wiki/Barbershop_paradox

    The opposite of (A ⇒ B) is ¬(A ⇒ B), which, using De Morgan's Law, resolves to (A ∧ ¬B), which is not at all the same thing as (¬A ∨ ¬B), which is what A ⇒ ¬B reduces to. This confusion about the "compatibility" of these two conditionals was foreseen by Carroll, who includes a mention of it at the end of the story.

  9. No–no paradox - Wikipedia

    en.wikipedia.org/wiki/No–no_paradox

    The paradox itself appears as the eighth sophism of chapter 8 of John Buridan’s Sophismata. [2] Although the paradox has gone largely unnoticed even in the course of the 20th-century revival of the semantic paradoxes, it has recently been rediscovered (and dubbed with its current name) by the US philosopher Roy Sorensen , [ 3 ] and is now ...