Daniel Fahey writes: “By day, Mychal Threets is a supervising librarian at the Fairfield (Calif.) Civic Center [branch of Solano County Library]. But under the gaze of the smartphone lens, Threets becomes a superhero. Not your usual tight pants or billowing-cape type. To his 600,000-plus followers on Instagram and almost 700,000 on TikTok, @mychal3ts is an ordinary man with extraordinary powers. From his first-rate reading recommendations to his sheer passion for advocating libraries as a tonic for a whole host of challenges.