The Lightbulb Moment: Season 1, Episode 1

1 - 1: LIKE BUTTON | The Unintended Consequences of the Facebook Like Button

When first presented with the like button (then dubbed "the awesome button") Facebook CEO Mark Zuckerberg had a simple response: "No." He worried that a quick thumbs up or down would discourage more meaningful online interaction. Eventually, his team changed his mind and transformed the world.