Reposting article about understanding pathological liars I posted this yesterday. It is a great article to understand and how to deal with those posters who are chronic liars and infest this board with their multiple aliases.
https://blogs.psychcentral.com/caregivers/2015/10/pathological-liars-how-to-protect-yourself/
Some good parts of the articles if you don't want to read the entire article....
"Don’t argue or fight with the pathological liar: It’s not worth your energy to argue with someone who lives in a fantasy or psychologically unstable word. Most liars lack an identity and struggle with feelings of insecurity and abandonment. Other pathological liars are simply sociopathic and overly confident. Either way, don’t argue or get into a confrontation with the liar because they will use circular arguing, demean you, and possibly create more lies to use in the future (possibly against you).You will never get to the truth, even with the use of intimidation. In some cases, you might get only half of the truth. It’s best to step back, work around the pathological liar, and keeping a safe distance."
"The most important goal for anyone who is dealing with a pathological liar is to always remember your dignity and self respect. A pathological liar typically has very little to no empathy and will take you as far as you let them."