Fact

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A Fact is any of the following:

A statement of an event or condition where the statement can be proven and shown to be correct (or disproven and thus shown to be incorrect) on the basis of some evidence, generally by other facts. A statement which is not capable of being proven or disproven, that is, is arbitrary, is an opinion. If a fact is shown to be incorrect it is called a "false fact" or, if the statement was intentional and known to be false when made, a lie. A fact shown to be correct is called a "true fact" or truth. A fact which was believed to be true may later shown to be false (disproven), and a fact which was believed to be disproven may later shown to be true.

Generally a fact is an event that has happened, or a statement that is generally regarded as true — whether one accepts it as real (true) or not. There are issues concerning whether all statements claimed to be true need be claims of fact. Statements about the truth of a theory or a scientific law, for example, are often regarded as not being claims of fact. Sometimes, of course, there are differences of opinion over what is factual, and there are some methods for attempting to minimize those differences.

agreed-upon reality
In philosophy, a fact is either a true proposition or something (a state of affairs, for example) that "makes" a proposition true. (See truthmaker)
In science, a fact is data supported by a scientific experiment. A fact is an honest observation. A scientific fact is an honest observation seen by many scientists. A scientific fact is a scientific observation that is so accepted that it becomes difficult to consider other interpretations of the data. A fact may tentatively support or refute a model of how the universe works. Facts do not prove a model is correct. One observation of any phenomenon does not prove anything.
Psychological aspects of factual claims: We tend to see facts which support our position and ignore facts which contradict our opinion. However, events that do not fit our framework also tend to stand out and draw our attention.
In law, a fact is a statement which is found to be true by a tryer of fact, sometimes a jury, but often the court (the judge or judges) after hearing evidence.
In computer science a fact is a single data value generated or used by a business process.
Abbreviation for the Fair and Accurate Credit Transactions Act (FACT Act).
The ICAO airport code for Cape Town International Airport

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