Some trudge, others sprint. Some materialize from otherworldly forces, others from infectious diseases. Some want flesh, others have a more specific taste for brains. Whatever their individual differences, we know zombies when we see them. And from 1932’s White Zombie to 2023’s The Last of Us, we’ve seen these charismatic, cannibalistic humanoids on the screen a lot through the generations. Off-screen, they’ve seeped into our language. (In the business world, a “zombie” lumbers on the edge of insolvency.) And more broadly, as suggested by a recent conspiracy theory that testing the nation’s emergency broadcast system would trigger an outbreak of ghouls,…