Looking from the outside as a non-Swiftie casually conversant in the surfaces of Taylor Swift lore, it becomes clear that the real triumph of the singer-songwriter’s massively successful Eras Tour was in its structure.

After all, the general idea that a globally beloved superstar with an extensive catalog would spend a lengthy live show playing various hit songs and deep cuts from different eras of her career is not exactly earth-shattering. It might strike less Taylor-centric music fans as what is often called a “concert.” Even the supersized nature of the show seems more like a combination crowdpleaser and status symbol than an unprecedented undertaking; Paul McCartney and Bruce Springsteen do three-hour shows, too, and they’re old as hell. Swift is in the prime of her life.

But what

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