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Facebook makes a big change. Walmart boosts pay and closes some Sam’s Club stores. And Activision Blizzard bumps up its game. Plus, best-selling author Dan Pink talks about his new book, When: The Scientific Secrets of Perfect Timing.  Thanks to Casper for supporting The Motley Fool. Save $50 on a mattress at http://www.casper.com/fool (promo code “Fool”). Learn more about your ad choices. Visit megaphone.fm/adchoices