'''Certainty''' can be defined as either (a) [[perfect]] [[knowledge]] that has [[total]] [[security]] from [[error]], or (b) the [[mental]] [[state]] of being without [[doubt]]. Objectively defined, certainty is total [[continuity]] and validity of all [[foundation]]al [[inquiry]], to the highest [[degree]] of precision. Something is certain only if no [[skepticism]] can occur.[http://en.wikipedia.org/wiki/Certainty]
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'''Certainty''' can be defined as either (a) [[perfect]] [[knowledge]] that has [[total]] [[security]] from [[error]], or (b) the [[mental]] [[state]] of being without [[doubt]]. Objectively defined, certainty is total [[continuity]] and validity of all [[foundation]]al [[inquiry]], to the highest [[degree]] of precision. Something is certain only if no [[skepticism]] can occur.[https://en.wikipedia.org/wiki/Certainty]