So we might imagine that liars have evasive eyes or the opposite, they simply stare at you, or perhaps it is more generally nervous behavior we associate with lies.
When we enter this world where anything can be fake, any image, any audio, any video, any piece of text, nothing has to be real, we have what's called a liars' dividend, which is that anybody can deny reality.
A poor liar usually exposes himself by looking too long at the victim, since he believes in the false idea that to look straight in the eye is a sign of honest communication.
And finally, even though liars keep descriptions simple, they tend to use longer and more convoluted sentence structure, inserting unnecessary words and irrelevant but factual sounding details in order to pad the lie.
In his book " Liar's Poker" , Michael Lewis tells the story of a senior trader quitting Salomon Brothers after being offered much more money by Goldman Sachs.