THE PROTOTYPE WAS A BEAUTIFUL LIE

Summary from the TLDR Design newsletter

Instead of creating high-fidelity prototypes disconnected from the product, a design team began prototyping directly inside the real codebase using Git branches, shared components, and AI coding tools like Cursor. This approach lets designers explore ideas in a safe, isolated environment while working with real constraints, resulting in more accurate prototypes, better collaboration with engineers, and clearer implementation handoffs. Figma remains useful for exploration and concept development, but the prototype becomes a working version of the product itself, reducing the gap between “looks done” and “is done.”