AI: Artificial Intelligence

The movie was...interesting, to say the least. Honestly, I found it rather far-fetched. If you approach any human being and ask them, "What is love?" you get a vast majority of responses. Not only do you have to take into consideration that it is an emotion, you also must take into account the fact that there are many physiological "symptoms" associated with love. Without having natural body organs, how do you simulate all the things that happen in connection to the feeling of love? Not only that, but psychologists have studied emotion for a number of years and there are still many theories circulating about it. You have theories of Cannon/Bard, Lang, and Schacter/Singer, just to name a few. All of these theories have a slight "chicken/egg" phenomenon associated with them. Which comes first? The recognizing of the emotion or the physiological arousal? This movie, I assume, assumes that love can be deduced down to a mere emotion--that they have discovered the cause and inner workings of the emotion. So, if that is the case, which psychologist/theory are we giving the credit to?