Because language is insufficient to explain/narrate all things in all situations for all others,SCREEN/STAGE ACTING BECAME PROFESSION. So an actor has to listen stories/scenes to decide his acting involvement "FOR DOING JUSTICE" to role,script and moral society. An actor acts his legs positioning,hands movement,face expression,dialogue diction and modulation "according to demands of role,script and public image". Any lawyer/law graduate may become an actor for the day to solve people's adamancy.

A person mind(society)(heart) is three dimensional which is either positive or negative or nor "negative of positive" against other's "positive of negative".
A person's mind is why(negative),what(positive) and how(negative of positive) at where(positive of negative).
So a person's mind(heart)(word) need be nonlinear while its sense must be consistent.