Thanks. Why is plausible deniability mentioned? "Plausable deniability refers to circumstances where a denial of responsibilty or knowledge of wrongdoing can not be proved as true or untrue due to a lack of evidence proving the allegation. This term is often used in reference to situations where high ranking officials deny responsibilty for or knowledge of wrongdoing by lower ranking officials. In those situations officials can "plausibly deny" an allegation even though it may be true."