Bezos, Zuckerberg, Pichai, and Nadella aren’t visionaries, though; they’re facilitators. At the helm of Amazon, Facebook, Google, and Microsoft, they live to bring their employees’ ideas to life, not their own. And they’ve built systems to do it. These CEOs are all engineers—not the sales or finance leaders who typically sit atop the world’s leading companies—and their systems draw inspiration from their backgrounds. At the heart of their inventive cultures is something I’ll call the Engineer’s Mindset.

