I often struggle to get others to have a clear vision of what damage a liar brings. By the time someone believes me, or even the statistics I present, it is too late: the damage has been done.
Liars put their own selves before others and will do irreparable harm to the lives and companies they are associated with.
Rather than outright lie and say, "I didn't do it", they will attack the accuser.
We saw this with Lance Armstrong and we see it in liars. Rather than deny the message, they attack the credibility of the messenger.
They do this because they have a need to do so.
Attacking the messenger is not always wrong, but when it supplants the reliable denial, it enters into a different category. The source can sometimes reveal the motive.
In the case of Bill Cosby, Statement Analysis of one of his accusers showed veracity: he did it.
There may be others who will falsely accuse him, and there may be other victims who remain silent. We allow the subject's own words to guide us.
Statement Analysis deals with what one says; but it also deals with what one does not say.
Bill Cosby did not deny the allegations. If he won't, why should we?