I have the great fortune of knowing that I am completely human.

[ it's said in something of a teasing tone, but -- you know, the homunculi and the battle to save humanity and whatnot in amestris had taught him a lot of valuable lessons on what being "human" really means. flaws and all, roy knows what he is. both literally and figuratively. ]

We also don't have giant robot lions in Amestris, and alchemy isn't used to create giant robot lions, so I'm afraid my specific brand of science might not be entirely useful to your own pursuits.