This design principle aims to actively assist users in quickly identifying, understanding, and resolving errors. Systems should provide clear and understandable error messages that explain the issue, indicate possible causes, and suggest concrete solutions. Visual cues, plain language, and logical recovery steps help users handle error situations confidently and maintain control. The goal is to reduce frustration, support efficient error correction, and enhance trust in the system. This kind of support is essential for a positive user experience and user-friendly system design.