Originally designed for cyclists, the idea was that we could give them access to information from their phones while reducing distraction. As we worked to progressively learn how the electronics and denim could work together as one seamless product, we explored hundreds of variations of the smart tag, failing our way toward the best version. From 3D-printed shapes to sewn straps and overmolded silicone assemblies, each iteration brought us one step closer to an ultimately successful product launch.

At IDEO, we’re big believers in the idea that if you want to succeed sooner, you’re going to have to fail earlier. And fail a lot. But each time you build something, you learn something new about the challenge you are trying to solve. This iterative cycle of question, make, answer, and ask a new question is why prototyping is such an important part of the design process. The more you make, the more—and the faster—you learn. And ultimately, the better the end product. That’s why we always encourage our teams to make something—early, often, and repeatedly.

Here are seven principles that help guide our prototyping process, as we fail our way to the best version of whatever we’re making.