Originally Posted by CountChocula
On the contrary, this is exactly what playing a role is, whether you are performing in the theater, film, or playing a role in a role playing game.
You must consider your character's perspective (again "someone who bashes monsters" is not a character) and make choices, taking actions you think that character would take.
When you are performing as an actor in a film, obviously, you don't rewrite the script and go to a different location, etc. However, acting in a film is still all about your choices, just as playing a role in an RPG.
Certainly there are bad films and bad actors and cases where you could say someone is not even acting, just standing in front of a camera and reading lines.
But when an actor is truly acting, he is taking actions he feels his character would take, making choices he feels his character would choose, saying things he feels his character would say.