It’s not the only time Jay-Z turned away from his worst impulses: “Made in America” offers the most professorial explanation of the early-2000s war between Jay-Z and Nas that has ever been committed to print. Rap’s most cherished beef probably started when Nas dissed Jay’s taste in luxury cars, although few outsiders know for sure. It continued through the release of Hova’s devastating diss track, “Super Ugly,” in which Jay-Z claims to have, Dyson relates delicately, “seduced Nas’ baby’s mother in their luxury car and left condoms on the infant seat.” Things went so far that Carter’s mother, fearing a repeat of the deadly Biggie-Tupac feud, had to tell her son to knock it off.