THINK ABOUT THIS …
It is NOT the actor’s job to reveal what they are thinking to the audience .
It is NOT the actor’s job to show how they are feeling to the audience .
It IS THE ACTOR’S JOB to occupy the circumstances and the relationship required to engage the audience with the difficulties the story is exploring.
# cease to behave as the person in those circumstances would
# and behave as a naive actor does in front of an audience.
As soon as the actor includes a bit of extra information for the benefit of the audience they CHANGE THE NATURE OF THE CONVERSATION.
Change the nature of the relationship; change the nature of the circumstances; change the nature of the person having the conversation BUT DON’T take on a responsibility that the character would never assume. The character in the story DOESN’T KNOW AN AUDIENCE EXISTS.