to call them a professional liar would be a compliment. Professional liars are spies and con artists. Actors are professional "make-believers"
I find it difficult to trust ANYONE 100%, even myself...for memory is often a fibber itself, letting us remember what we choose to.
It wouldn't be any different with an actor. Notice how people assume you are talking about a successful, rich actor...the majority of REAL actors go through life unknown, same as REAL musicians...
I bet you can't name 5 concert/orchestra musicians, whose skill far exceeds that of any pop musician, but you can name dozens, if not hundreds of bands and solo artists you like...
again, you are giving too much credit to actors, the professional liars are undercover cops, spies, con artists, and theives...to whom I give the utmost respect...I piss on actors