But why not just do that stuff yourself?

[ Weird. That's weird, Yamato. He can't claim to wholly understand it but now he's imagining, like, a scarecrow that can do chores if you poke it. Wouldn't that be funny? Or terrifying. Or both! ]

Though if he knows something about engineering, it's worth a shot. Um, but... is his name Wanderer? I thought he didn't want any names.