I don't think like Smriti anymore. The thoughts are from the given character's perspective. I let him know that the script is not convincing. If the script isn't convincing then how am I supposed to convey it to the audience. So we then act accordingly, either tone it down or flash it up.
Every director obviously knows to a certain extent that an actor has to be convinced.
If he or she is not convinced then there is no point. I read the script before hand, know the character sketch. If I feel something has been missed out then I approach the director or the set authority to make the changes that needs to be worked on. I normally give one or two takes only. I normally read the script just before giving a shot, because I believe in instant reactions for the scene.