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a term used in probability theory, logic, epistemology, and law (theory of legal proof). In philosophical and logical-methodological investigations it is most frequently used to characterize knowledge that is valid, conclusive, or indisputable and also as a synonym for truth. In experimental natural science the term “certainty” frequently designates events and judgments that are regarded as empirically confirmed by special experiments or, more broadly, by the social and productive practice of men.

The term acquires a somewhat specialized meaning in probability theory. In so-called subjective, or personal, probability, certainty is most frequently interpreted as a concept reflecting the subject’s confidence in the correctness of his evaluation of the probability that a particular event will occur. From this point of view certainty also expresses the extent of a given individual’s knowledge about the conditions and factors contributing to or counteracting the occurrence of events. In this sense, with the exception of extremely idealized or oversimplified cases, certainty includes a considerable element of uncertainty, inasmuch as exhaustive knowledge about such conditions and factors is practically unobtainable.


References in periodicals archive ?
On the other hand, you must remember that it is virtually impossible to prove anything to an absolute certainty and the Crown is not required to do so.
Drawings of the stone finds are "highly suggestive" of genuine artifacts, says Howell, though he cannot vouch for their authenticity with absolute certainty.
A person throws a stone as fact through air not fact but appearance of fact floating in vacua Blind existential being may possibly not occur at all we know nothing with absolute certainty of existent things not even the single "word" the
On the other hand, when taxpayers require absolute certainty of result when holding the property throughout its economic life, practitioners may need to recommend the traditional method with curative allocations.
If life were merely positive, or if everybody believed with absolute certainty that pious, righteous living would lead to just rewards, then the world would be a much different place.
I cannot presume to gauge the response of all of these central bank governors and finance ministers, but I can tell you with absolute certainty that some number of them, and perhaps a large number, would question the appropriateness of their reserve activity being scrutinized by the GAO and the Congress.
When using an extruder, there is an absolute certainty that every compound particle has the same residence time in the machine at a minimal tolerance only.
By combining Google enterprise search with Mathon Integral, customers get the power of Google indexing with the absolute certainty Mathon metadata provides--knowing where, when and how every critical document resides or is changed in the enterprise.
The top-class sprint race, the third on the card at 7pm lies between three of the best two benders in the country namely Ballymac Jones, Dreams of Glory and Chester Lad, I'll let someone else pick the winner out of those three but Charlie Lister's Killieford Khali looks an absolute certainty in the fourth race over 672m, he hasn't run since impressively beating Sidaz Dippy (Perambulate Stakes finalist) by nearly five lengths over course and distance on March 9 and he will win with ease against moderate opposition.
It looked an absolute certainty that Jorge Enriquez and Javier Aquino's goals would see Mexico through to the semi-finals.
Surely Long Run is likely to get even better and looks an absolute certainty for 2012.