"Why are the pulleys at the bottom?" King Anheg demanded suspiciously.
King Rhodar shrugged. "How should I know? I'm not an engineer."
"All right, if you're going to be that way about it, I'm not going to let your people touch a single one of my ships until somebody tells me why the pulleys are down here instead of up there."
King Rhodar sighed and beckoned to an engineer who was meticulously greasing a huge pulley block. "Have you got a sketch of the rigging handy?" the portly monarch asked the grease-spattered workman.
The engineer nodded, pulled a rolled sheet of grimy parchment out from under his tunic, and handed it to his king. Rhodar glanced at it and handed it to Anheg.
Anheg stared at the complex drawing, struggling to trace out which line went where, and more importantly why it went there. "I can't read this," he complained.
"Neither can I," Rhodar told him pleasantly, "but you wanted to know why the pulleys are down here instead of up there. The drawing tells you why."
"But I can't read it."
"That's not my fault."
Enchanters End Game by David Eddings