Prometheus: Happy Birthday David!

I thought Prometheus' first David 8 promo video was creepy (Prometheus: More Promos!). This one gave me goosebumps. Check out Fassbender's David 8 crying without emotion at 1:20: Prometheus Viral Clip # 3 (David the Android) FilmsActuTrailers What is David 8's flaw? Why did Weyland Industries need to build the Bishop series? Are the androids in the Alien Series the same as the "Replicants" in Blade Runner? Is our technology there yet? I'm afraid to google it. I'm sure Japan is working on something that most likely will enslave us into the Matrix soon. Go ahead, look up "realistic robots" on youtube. I guarantee it'll creep you out.