Always exciting to see what groundbreaking discoveries the Nobel Physics Prize will honor this year. Can't wait to learn about the latest advancements!
That's a sneaky switch from we to you. Meaning: Collectively, humanity definitely have done and proven the latter, more so than necessary.
And if we were to dive deeper into the Philip K. Dick style fantasy realm you're hinting at: What's stopping an android's sensory system from being augmented to perceive only what they're meant to see? Heck - Why wouldn't the 'parts' be made in a way where they're indistinguishable by us either way?
Once you go down that line of questioning, it's hard to win!
Yep, once you've got the base coding agent (as in the workshop above), you can use it to build another agent or anything really. You start from that kernel and you can bootstrap upwards from that point forward and build anything.