The video app offers an endless scroll of creativity and goofing off, told in 15-second snippets. What did five critics see when they went down the rabbit hole? Art, artistry and a lot of dancing.

In 2019, we take our entertainment in microdoses. A complete story may be unspooled in a fleeting video snippet, a tweet, a GIF. The social media app TikTok has built an entire world on that premise, amassing a vast global collection of 15-second clips that are changing the way we sing, dance, pose, joke, dress, collaborate and cook. It is home to comedy sketches, dance

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It's bite-size, low-tech TV

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A social network for the self

Music and culture in a warp-speed blender

Dancing as though billions are watching

When 15 seconds is not enough