AI may be dominating discussions right now—from boardrooms to classrooms to chatrooms—but there’s another tech revolution brewing that deserves our attention: quantum computing. Sure, quantum is complex, but it’s no harder to understand than AI (and it might even be more concrete). The big players in the space are familiar: Google, Microsoft, Amazon, IBM, and more. And it’s likely to transform entire sectors of business—finance, medicine, energy—in the next decade or two. So it’s time to get ready. Here’s a simple, concise, and empowering guide to understanding WTF quantum computing even is. —Jill Bernstein