Short Discussion Questions (Please Answer each question separately) needed in 2-3 hours

Discussion question 1:DISCUSSION TOPIC/QUESTION:
Why is this method of acting still so important today? Why can’t I just memorize the lines and be done with it?  If I (as an actor) can conjure up emotions at will and give a good speech, shouldn’t that be enough?! Why do I need to study, research and learn about the characters that I am portraying?