Cover of Cognitive Surplus

Cognitive Surplus

by Clay Shirky

2010 242 pages eng ★ 3.8 (5 ratings)

"Every single year for the second half of the 20th century, the amount of television watched by humanity increased. Collectively, we now watch more than one trillion hours of television every year – something not entirely unlike, as Clay Shirky sees it, tipping the free time of the world's educated …

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