Overreacting won't likely end up with someone having a bruised skull, or worse.

"Uh, yeah, yeah we do." Prompto watches him closely, hoping he's not going to take forever to pick a book. Just because the chair's steady, doesn't mean the book he's standing on are. "If I were in your situation, I'd find a ladder. You know, the things that are meant to be climbed on? Or find a taller person."