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Not-so-hidden persuaders

The whole field of cookie-based marketing and "retargeting" is aimed at persuading you, wherever you may be

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Ambi Parameswaran
The screen flashes “intermission”. You get up from your comfortable seat at the theatre. You feel like grabbing your favourite popcorn and, yes, a can of Coke. You rush out, to beat the others to the snack counter. Grab your popcorn and Coke. Start taking a sip of the Coke and stop. When did you start thirsting for a Coke? Were you not off sugary drinks for a bit? Did something motivate you to run for the Coke can?

In 1957, a researcher by the name of James Vicary ran an experiment in a cinema hall in the US. During
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