"It's probably not," Ed answers, shrugging. "Most worlds don't seem to have automail."

He doesn't know if it's somehow linked in with them not having alchemy, but he does wonder why they don't. Most of the people who have seen his arm and leg have been intrigued by it, seem to think it's a wonderful use of technology. But he's only heard a few people who have seen something comparable.

"I can't really explain it," Ed says. "My mechanic is the one who built it. She knows it."