The Art of Designing for Failure

Defensive design turns frustration into a physical impossibility. By anticipating every way a user might mess up, engineers craft objects that literally prevent errors before they even happen.

Have you ever noticed that a USB-C cable or a power plug only fits one way? That is defensive design in action, where the physical shape of a product forces the user to get it right. Instead of blaming people for mistakes, designers build safety nets directly into the hardware. This approach is essential in fields like medicine and aviation, where even a small user error could lead to disaster.