Rand did not know whether any of it would work, but some looked worth trying. That plow, for instance, could be handy if Cairhien was ever to feed itself again. He would tell Idrien to build it. No, he would tell Berelain to tell her. Always follow lines of authority in public view, Moiraine had said, unless you mean to undercut someone and bring them down.

Among the teachers he knew was Kin Tovere, a stocky lensmaker who kept wiping his bald head with a striped handkerchief. Aside from looking glasses in various sizes—“Count the hairs in a man’s nose at a mile,” he said; that was how he talked—he had a lens as big across as his head, a sketch of the looking glass to hold it and more like it, a thing six paces long, and a scheme for looking at the stars, of all things. Well, Kin always wanted to look at things far off.

Idrien wore a look of quiet satisfaction while Rand studied Master Tovere’s sketch. She was not much for anything but the practical. During the siege of Cairhien, she herself had built a huge crossbow, all levers and pulleys, that hurled a small spear a full mile hard enough to drive through a man. Had she her way, there would be no time wasted on anything not real and solid.

“Build it,” Rand told Kin. Maybe it was of no real use, not like the plow, but he liked Tovere. Idrien sighed and shook her head. Tovere beamed. “And I’m giving you a prize of a hundred gold crowns. This looks interesting.” That produced a buzz, and it was close whether Idrien’s jaw or Tovere’s dropped farther.

Other things in the hall made Tovere seem as levelheaded as the would-be road-builder. The round-faced fellow who did something with cow dung that ended with a bluish flame burning at the end of a brass tube; even he did not seem to know what it was for. The lanky young woman whose display was mainly a shell of paper moored by strings and kept aloft by the heat rising from a small fire in a brazier. She mumbled something about flying—he was sure that was what she said—and birds’ wings being curved—she had sketches of birds, and of what seemed to be wooden birds—but she was so tongue-tied meeting the Dragon Reborn that he could not understand another word, and Idrien certainly could not explain what it was about.