“Barry Jenkins is compact, bald, bespectacled and bookishly handsome. Tarell Alvin McCraney is much taller, with an immaculately groomed beard and stylish green Adidas sneakers … Mr. Jenkins is straight; Mr. McCraney said he considers himself ‘gay-identified.’ Yet their childhood experiences were so similar, their lives so parallel, that you could mix up many facts of their biographies and they’d still be true.”