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Yet the cultural dominance of the iPhone — and the transformation of the open internet into “walled gardens” and apps focused on simplifying the user experience — has taken the “triumph of seamless usability” to a new level. This “tyranny of convenience,” to borrow Tim Wu’s phrase , should sensitize us to what may be lost when democratization

That changed when social networking became social media around 2009, between the introduction of the smartphone and the launch of Instagram. Instead of connection—forging latent ties to people and organizations we would mostly ignore—social media offered platforms through which people could publish content as widely as possible, well beyond their

For one, social-media operators discovered that the more emotionally charged the content, the better it spread across its users’ networks.

TikTok enables and invites the pointed, witty, playful, allusive, zany and endlessly inventive combination of video, music and text. But the creative energies of its more than one billion users are circumscribed and channeled by the architecture of the platform.

TikTok’s spectacular success in enlisting consumers as producers depends on making