In Marjorie Prime, an elderly woman, her daughter, and her son-in-law all have opportunities to work with an artificial intelligence hologram, called a Prime. These beings are programmed to be good listeners and to respond to questions. But first they have to be trained and fed descriptions of the person they are representing. Memories are particularly challenging because we tend to remember not an event, but the last way we remembered the event. Memories are recollections of memories.
Here's an exercise to try after seeing this film. With another person — a good friend, a partner, a family member — describe what a "Prime" of this person would need to know in order for you to be convinced that you were talking to him/her. What are the other person's key personality traits? What do they like or dislike? What are their strengths and weaknesses? What memory would they share?
After you have come up with 10 or more descriptive phrases, have the person add some ways they see themselves. Then switch places and continue this "Prime" education. Be honest but also be gentle with this.