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  2. List of idioms of improbability - Wikipedia

    en.wikipedia.org/wiki/List_of_idioms_of...

    The word nikoli, when stressed on the second syllable, means "never", when stressed on the first it is the locative case of Nikola, i.e. Nicholas; Spanish – cuando las vacas vuelen ("when cows fly") or cuando los chanchos vuelen ("when pigs fly"). Its most common use is in response to an affirmative statement, for example "I saw Mrs. Smith ...

  3. Randomness - Wikipedia

    en.wikipedia.org/wiki/Randomness

    Individual random events are, by definition, unpredictable, but if there is a known probability distribution, the frequency of different outcomes over repeated events (or "trials") is predictable. [note 1] For example, when throwing two dice, the outcome of any particular roll is unpredictable, but a sum of 7 will tend to occur twice as often ...

  4. Black swan theory - Wikipedia

    en.wikipedia.org/wiki/Black_swan_theory

    The black swan theory or theory of black swan events is a metaphor that describes an event that comes as a surprise, has a major effect, and is often inappropriately rationalized after the fact with the benefit of hindsight. The term is based on a Latin expression which presumed that black swans did not exist. The expression was used until ...

  5. Stochastic - Wikipedia

    en.wikipedia.org/wiki/Stochastic

    The event creates its own conditions of possibility, rendering it unpredictable if simply for the number of variables involved. Stochastic social science theory can be seen as an elaboration of a kind of 'third axis' in which to situate human behavior alongside the traditional 'nature vs. nurture' opposition.

  6. List of bad luck signs - Wikipedia

    en.wikipedia.org/wiki/List_of_bad_luck_signs

    Breaking a mirror is said to bring seven years of bad luck [1]; A bird or flock of birds going from left to right () [citation needed]Certain numbers: The number 4.Fear of the number 4 is known as tetraphobia; in Chinese, Japanese, and Korean languages, the number sounds like the word for "death".

  7. Shock (economics) - Wikipedia

    en.wikipedia.org/wiki/Shock_(economics)

    In economics, a shock is an unexpected or unpredictable event that affects an economy, either positively or negatively. Technically, it is an unpredictable change in exogenous factors—that is, factors unexplained by an economic model—which may influence endogenous economic variables.

  8. Coincidence - Wikipedia

    en.wikipedia.org/wiki/Coincidence

    The paradox consists, loosely speaking, of the fact that probability theory is able to predict with uncanny precision the overall outcome of processes made up of numerous individual happenings, each of which in itself is unpredictable. In other words, we observe many uncertainties producing certainty, and many chance events creating a lawful ...

  9. Luck - Wikipedia

    en.wikipedia.org/wiki/Luck

    Here the word "daivam" does not mean luck, fate, fortune, providence, or destiny. None of these English words are the exact synonym for the Sanskrit word "Daivam" here. "Daivam" is the Cosmic Wheel of Action (Kshara-gati, Apara-Prakriti, Maya) that keeps the perfect account of our past and present actions.