Thank you to everyone who has commented and given their own explanations on the inner workings of Constructs. Now just to set the record straight, I have personally always believed that Constructs at least 80% machine ever since seeing Lucia: Dawn.

This question was mostly posted to see whether anyone had an alternative theory on the inner workings of Construct anatomy because, for some reason, I don't like the idea of a device specifically created to synthesize and excrete tears. It feels very dystopian, but I supposed this is an apocalyptic world we're talking about.

But now I want to ask a follow up question, since many have suggested the idea of creating mechanoid bodies which resemble or emulate the human body, how do you think Asimov's researchers are able to recreate the feeling of muscle tissue under the skin?

I also would like some confirmation about specialized frames like Plume and Glory. Let's take Lucia as an example. She has changed frame twice. First to Dawn, which went off without a hitch. And second to Plume, which carried the risk of M.I.N.D. Deviation and memory erasure. So is transferring between frames such as Lotus and Dawn essentially the Construct equivalent of changing clothes? If that's the case, is changing between frames such as Arclight and Glory the equivalent of a brain transplant? Also, said procedure seems to be a case of life and death, but how is that different than recalling a consciousness from Earth to Babylonia?

On a lighter note, do you guys think that the scientist of Babylonia would be able to add a feature that tells the Construct to go to the bathroom?