The ability to determine the validity and credibility of a source (is a key element of problem solving) and helps one in their everyday life because, when problems arise, it is important to ensure that one has an argument that is credible.
Sometimes, one may be faced with a legal case. In the court of law, evidence from sources that are not credible are quickly discarded and such may also impinge on the character of the person who supplied the unauthoritative source of information.
In academics, the strength of a research work, and its claims are only as strong as the source of it evidence.
Thus is is important to check the source and validity of an information before presenting them to make a case.
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