In this episode of “Masters of the Craft,” Brian is joined by award-winning comics writer and novelist G. Willow Wilson, author of “Cairo,” “Alif the Unseen,” and “Ms. Marvel.” G. Willow shares the path that led her to her fruitful career—starting with teaching English in Egypt and, most recently, writing a novel about watchmaking—and why she delights in the notion that writing stories is similar to solving a mathematical equation.