To be fair, she’s not so much playing as she is demonstrating, but nonetheless, Parcak is sitting in a fancy New York restaurant and is definitely not eating her $12 bowl of greens. Parcak—a scientist, professor, Egyptologist, anthropologist, and the 2016 winner of the $1 million TED prize—pushes her fork and knife aside, nudges the bowl across the table, and begins her lesson. “Let’s just say this is our hillfort,” she tells me, gesturing to the salad. “And let’s just say this”—Parcak takes the bright orange napkin from her lap and drapes it over the imaginary landscape—“is modern debris, covering it.”

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