[ oh— oh no, he's not big brain or bookworm enough to know the details! the little details he's sure erwin would like, and that makes falco falter for a second— i'll surprise him, he thinks to consider, to grab a book about steam engines in the library to be able to explain better. for now, he'd have to make do with the simplicity of knowing "basic" technology. ]

I think so, [ falco hovers his hands just above his lap and motions with them, one at a different time than the other but circling, side by side. ] they use coal to burn, and that heats up water enough to make steam. [ his hands stop, and he uses a compacting gesture, ] The pressure the steam makes moves the parts inside and powers the engine.