After all, not to be corny, haven’t we all become selective autobiographers in the digital age as we curate our lives for our own audiences of any size—cutting away from the raw fabric of our lived experience to reveal the shape of the story we most want to tell, whether it’s on our own feeds or the world’s stage?

It’s hard to see history when you’re in the middle of it, harder still to distinguish Swift’s impact on the culture from her celebrity, which emits so much light it can be blinding. But something unusual is happening with Swift, without a contemporary precedent. She deploys the most efficient medium of the day—the pop song—to tell her story. Yet ov... See more