When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Necessity and sufficiency - Wikipedia

    en.wikipedia.org/wiki/Necessity_and_sufficiency

    A number's being divisible by 4 is sufficient (but not necessary) for it to be even, but being divisible by 2 is both sufficient and necessary for it to be even. Example 3 An occurrence of thunder is a sufficient condition for the occurrence of lightning in the sense that hearing thunder, and unambiguously recognizing it as such, justifies ...

  3. Necessary - Wikipedia

    en.wikipedia.org/wiki/Necessary

    An important task or essential thing to do at a particular time or by a particular moment; Necessary and sufficient condition, in logic, something that is a required condition for something else to be the case; Necessary proposition, in logic, a statement about facts that is either unassailably true (tautology) or obviously false (contradiction)

  4. Metaphysical necessity - Wikipedia

    en.wikipedia.org/wiki/Metaphysical_necessity

    A proposition is said to be necessary if it could not have failed to be the case. Nomological necessity is necessity according to the laws of physics and logical necessity is necessity according to the laws of logic, while metaphysical necessities are necessary in the sense that the world could not possibly have been otherwise. What facts are ...

  5. Importance - Wikipedia

    en.wikipedia.org/wiki/Importance

    Importance is a property of entities that make a difference in the world. [1] [2] So for something to be important, it has to impact the world around it.For example, World War II was an important event in history both because of the suffering it caused and because of the long-term political changes it affected. [3]

  6. Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

  7. Information needs - Wikipedia

    en.wikipedia.org/wiki/Information_needs

    Information needs are related to, but distinct from information requirements. They are studied for: The explanation of observed phenomena of information use or expressed need; The prediction of instances of information uses; The control and thereby improvement of the utilization of information manipulation of essential conditions.

  8. Sine qua non - Wikipedia

    en.wikipedia.org/wiki/Sine_qua_non

    A sine qua non (/ ˌ s aɪ n i k w eɪ ˈ n ɒ n, ˌ s ɪ n i k w ɑː ˈ n oʊ n /, [1] Latin: [ˈsɪnɛ kʷaː ˈnoːn]) or conditio sine qua non (plural: conditiones sine quibus non) is an indispensable and essential action, condition, or ingredient.

  9. Essential elements of information - Wikipedia

    en.wikipedia.org/wiki/Essential_elements_of...

    The EEI are specific to a particular event, thing, or other target individual. The EEI are written out in advance as questions by consumers of the EEI information. Then, the EEI questions are used by collectors of the information that may not be in direct contact with the consumer at the time the information is collected. A specific set of EEIs ...