But a shift has happened nonetheless: the Internet used to reflect our real-world lives and the physical world. Increasingly, our real lives and physical worlds are just a reflection of our digital ones.

In real life, the success or failure of each individual performance often plays out in the form of concrete, physical action—you get invited over for dinner, or you lose the friendship, or you get the job. Online, performance is mostly arrested in the nebulous realm of sentiment, through an unbroken stream of hearts and likes and eyeballs,

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