Instagram co-founders, dubbed by some at Facebook as not "team players", were needed at the company to challenge Mark Zuckerberg and its groupthink culture (Kara Swisher/New York Times)

Kara Swisher / New York Times:
Instagram co-founders, dubbed by some at Facebook as not “team players”, were needed at the company to challenge Mark Zuckerberg and its groupthink culture  —  Kevin Systrom, a founder of Instagram, wasn't a “team player.”  That was exactly what the company needed.