Do movie actors/actresses remember the whole sequence and script on their tips. Is it so? no , not at all
but in drama and theater you have to be aware of every particular line with perfect timing and at the same time the best emotions have to be given(there are no retakes at all)once said on the stage is full and final. that’s why most of the best actor-actresses has come from the rangmanch.THere is a dialogue in anand ’’hum sab toh rangmanch ki kathputliyan hai’’ that’s very true to be the best of the artist in this field one has to feel himself as the part of the character, one should completely merge in the character, when you yourself are the part of the situation the most natural thing comes out of you automatically. So if one tries to immitate the actors he loses his self identity his own natural talent dies , like if in any of the drama one has to give a speech like a politician and there you try to immitate shah rukh khan you smatter like srk then your own talent is suppressed.one should always give the best to every scene cause when the scene is over one can never change it in the whole life and the pinch remains in the heart that I could have given more to this.
well that’s it
i’m not a very great actor but that’s all I know about and still learning more.
gud luck n take care
thank you