All animals have, for want of a better phrase an EPROM in their heads, the purpose of which is to get us going, growing, breathing, eating, feel, touch, sight, curiosity, walking, speech and movement etc. The rest of our learning is ad hoc, nurture not nature (IMHO) We learn through experience of life growing up and input provided. Each of us human beings has a billion or ten billion choices through life that shape us, some may be become mathematicians, some sportsmen some carpenters, the choice is massively diverse but the point is those choices have taken shape over years of personal experience.
Now, let’s take a normal 21 year old human being. Imagine what has gone on in his head since birth, imagine the input, it’s massive, probably too much to even think about. Now, say we hypothetically build an android, for want of a better word, he’s programmed with identical features, EVERYTHING is the same as the original, mentally and physically. But to get the android to mimic 100% the original human he has to be built, probably the day before, and programmed with everything that’s in the humans head. He’ll remember being 3’6” but never was. At this stage are we sure, are we really sure the android is safe to be let out? After all, supposedly he’ll be a sentient being and capable of changing his mind, he could even take up religion. As far as I see it, if it has to be (pre)programmed, apart from the initial EPROM, it’s not A1 it’s just a super computer.
I can guarantee the girlfriend would tell the difference.
"The more connected we get the more alone we become" - Kyle Broflovski©