Keriya scowled. “Why are we doing math? I thought you were going to teach me to wield.” “To build a strong tower, you must have a solid foundation,” he said in a lofty voice. He was probably right, but she couldn’t help feeling disappointed. “To solve for m, we multiply a wielder’s conversion speed, c, by the time it takes him to manipulate threads over distance, delta-t,” said Viran, pointing to the corresponding runes. “We divide that product by Q, which represents a wielder’s quadrature amplitude modulation.” “I—I’m sorry, quad-what?” “Quadrature amplitude modulation. Threads are molecules manipulated in energy waves. If a person can modulate the wavelengths of his spells to make his threads more concentrated, he will have more power. It’s a simple concept.” Keriya didn’t think it

