The first known design of a robot was made by Leonardo da Vinci in 1495, but the first functioning android was made in 1738 by Jacques de Vaucanson. The point of this message is that I find it silly that you're argumenting with that we haven't been able to build a robot that "works as well as the human body" now that we've been seriously working with robotics only for such a short period of time compared to how long it took for the human body to evolve into its current complex form.
Sorry for grasping in such a small thing but it really caught my eye.
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