Summary: With a paper prototype, you can user test early design ideas at an extremely low cost. Doing so lets you fix usability problems before you waste money implementing something that doesn't work. In my experience, designers almost never use paper prototyping in real design projects despite its potentially immense contribution to creating a high-quality user experience. Too Simple to Be True?
![Paper Prototyping: Getting User Data Before You Code](https://cdn-ak-scissors.b.st-hatena.com/image/square/1f750b799b8f96e37907d61ff6b51de27fec3aad/height=288;version=1;width=512/https%3A%2F%2Fmedia.nngroup.com%2Fmedia%2Farticles%2Fopengraph_images%2FSlide31articlespaper-prototyping.png)