Retailers aren't only tracking consumers online; they're also doing it when consumers shop in brick-and-mortar stores. Robert Siegel talks to Latanya Sweeney, chief technology officer for the Federal Trade Commission, about how the tracking works and whether consumers can opt out.
A computer program known as "Eugene Goostman" passed the Turing Test by convincing a group of people, via chat, that it was actually a 13-year-old boy. Cognitive scientist Gary Marcus argues that the Turing Test needs an update for the 21st Century.
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