Man, the Canterbury Tales prologue is basically social media before social media, right? Chaucer doesn't start with some lofty philosophical premise. He just drops you right into the middle of a rowdy, gossipy group of pilgrims at the Tabard Inn. You're immediately eavesdropping. The technique is pure character sketch-as-plot. He introduces each pilgrim with these intensely specific, almost judgmental details—the Monk's love of hunting, the Wife of Bath's gap-teeth, the Pardoner's waxy yellow hair. It's not about their inner lives first; it's about their surfaces, their props, their clothes, their vices. You form opinions instantly. The engagement comes from that human instinct to categorize and judge, and from the promise that these vivid, flawed people are going to interact, tell stories, and probably clash. It feels less like reading and more like people-watching from a really good corner table.
Also, that frame narrative sets up immediate stakes and curiosity. We know they're having a storytelling contest. So as we meet the Miller, the Knight, the Prioress, we're already thinking, 'What kind of tale would THIS person tell?' The prologue creates a cast list for the entire book, turning character introduction into narrative engine. You're engaged because you've been handed the program and you can't wait for the show to start, especially with someone as messy as the Miller right there next to the noble Knight. The tension is baked in from line one.