One winter evening, during a snowstorm that muffled the city’s footsteps into slow crescendos, Evelyn found an email in a departmental listserv. It announced a small symposium: “Mathematics for the New Century.” The organizers were modest but thoughtful; speakers would include teachers from schools and professors who taught large lectures and tutors who worked one-on-one. Evelyn signed up to present a short talk about the tutorial experiment sparked by the 2A PDF.