Be Right Back!...or will I?

After watching "Be Right Back" and talking over the potential of machines in general, much has come to mind of what our future could possibly hold. Could our lives truly go down the path of which we see within sci-fi movies, stories, and/or books? Could androids eventually roam among us and become of us as people? In a video game I've once played called NieR Automata, the story takes place within a time far into the future where humans become near extinction and what remained were androids among the earth fighting for the sake of the human's survival. In the end, and what became more of a twist was the fact that from the start of the story the humans were already extinct and the androids were all that were left, however they themselves acted more "human" than they were machine. They bled, cried, went insane, felt pain and sadness. The point for which I bring this up is to think what if several thousands of years from now that due to our current progress in technology, such a future could come. Where we conceptualized the human brain to a point where we can even create a machine to replicate psych and neurology. In "Be Right Back", Ash 2 was capable of replicating actions that to us look like reactions to stimuli. If machines were to perfectly display such ways of acting, could we possibly tell the difference between reality or false perception? For us as humans the way we react to one another is what consider as natural. But for a machine to do this, as it is made by  our hands, could it be even considered natural to us or would we call it artificial? And if it exists, in the idea of psych, can we say that we are merely reacting to it, not it reacting to us?

In favor of all my questions and wonders of this I have no real reaction or emotion to this reality. It's just an empty array of many questions and no answers. It would be a world I have no doubt that we are reaching but of one I would rather wait and see if it comes within my life time. This could become an amazing discovery, or a doomed fate that we can no longer escape.