Brittany Kaiser, a former Cambridge Analytica insider, witnessed a two day presentation at the company that shocked her and her co-workers. It laid out a new method of campaigning, in which candidates greet voters with a thousand faces and speak in a thousand tongues, automatically generating messages that are increasingly aiming toward an audience of one. She explains how these methods of persuasion have shaped elections worldwide, enabling candidates to sway voters in strange and startling ways.

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