My world is almost like a fantasy steam/solar-punk set up and my main character has a metal left limb. I guess I shouldn't try to worry too much, but it always bothers me that I'm not sure if I have a truly logical explanation for how his limb functions.
I do have an idea for how it works and it's probably the best I'll be able to manage but I just want to make sure that there are no other solutions out there.
The set up I have so far is he has a metal plate in his shoulder that connects his nervous system to the "wires" in his limb that function as artificial nerves and connect to joints in his arm and hand that allow him to move his limb.
So I guess my question is: Is there anyway to make my set up more believable or are there other solutions to make this believable?