Yes not misspelled and my title is right: Artificial I . Lets us zoom for a second on 'why' and 'what' and then we can have a look at 'when'. Why ? Look at yourself in the mirror for 1 min. until you have your image in your memory. (Warning: to some the experience may be to much to take. I am not joking or alluding to anything here. Simply stating the fact that this process is deeply personal and may evoke number of complex emotions. Some of them may be not as pleasant as you would expect it.) Then sit yourself somewhere comfortably and close your eyes. Concentrate and try to bring your image back. You may succeed or you may not. It all depends on your brain ability to recall the images quickly and reliably over time as well as strange desire and ability to forget certain images. Now you probably slowly starting to realize by yourself is 'why' :) We need some sort of third party involvement here to help us along way as we have our limitations