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Majority of people still judging a book by its cover. According to the research, most people formed impressions of others after seeing their profile picture, without ever reading any of the text contained in their profile.

AT&T might sell the most iPhones, but even Best Buy is surprisingly pretty close to Apple's own sales numbers. Judging by the insane lines outside of Apple retail stores after a new iPhone or iPad product launch, you’d think there would be no question as to which outlet sells the most devices. As it turns out, Best Buy actually sells nearly as many iPhones as Apple does — and Apple isn’t even the leader.

Kaggle, a San Francisco-based startup that hosts data science competitions, has uncovered some disconcerting insights about human behavior in its two-year run. At times, its founders have been rprised by the accuracy of an algorithm, and the competitions continue to evoke controversy.