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millions—often more than the budget of the movie itself—studios regularly write off major releases as complete washes. And when they do succeed, no one has any idea why or which of the ingredients were responsible for it. As screenwriter William Goldman famously put it, nobody knows anything—even the people in charge. It’s all a big gamble. Which is fine, because their system is designed to absorb these losses. The hits pay for the mistakes many times over. But there is a big difference between them and everyone else in the world. You can’t really afford for your start-up to fail; your friend has sunk everything into her new business; and I can’t allow my book to flop. We don’t have ten other projects coming down the pike. This is it.
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Ryan Holiday (Growth Hacker Marketing: A Primer on the Future of PR, Marketing, and Advertising)