Moving on...

    After watching this film I was in awe.  It is crazy to think that in this world technology is advancing at an alarming rate. This film was sort of a warning, not that we (humanity) should not embark down this road, but just that we should be extremely careful to think it through. How do we build memories, do we build them manually or through mind uploading, how would we deal with imperfections, etc.  In 1970 Masahiro Mori, then a robotics professor, wrote an essay on how he envisioned peoples's reactions to robots that looked and acted almost human.  That is when he came up with The Uncanny Valley, it is the response people get when they see something that looks very similar to a human but is not.  In the film "Be Right Back" we would relate the fake ash to The Uncanny Valley.  Even though he seems to look exactly like the real Ash there are little imperfections that keep him from being the real Ash, he does not feel emotions.  The emotions he shows are from the he videos and social media posts that were uploaded to his memory storage.  He does things when Martha tells him to, which irritates her.  She does not seem to understand that he will never compare to the real Ash, obviously she is stuck in a fantasy, she did not give herself enough time to mourn and go on with her life. 
    Being a human is not just about our characteristics, it is not just about our features...so what makes us human? Reasoning and emotions make us human, that is how we communicate feelings and affection with other people.  Even though the real Ash was very distant from Martha because of technology, you'd think Martha would know better than to keep going on after talking to the fake Ash on the phone, but she felt as if the fake Ash was actually closer to her than the real Ash.  As time went on she noticed they were not the same person at all.  She told him "You are just a performance of stuff he performed without thinking".  This is when she wanted to get rid of him, but could not fathom the though of being away from him, that she ended up locking him in the attic.  Some years pass and it is her daughters birthday, her daughter asks her if she can take some cake up to Ash, Martha then says but it is not the weekend.  In my opinion she is very wrong for keeping Ash both for her and her daughter...it is a relationship that will destroy them psychologically.  Back to what I said on some lines above she needs to give herself time to grieve his loss and to move on.