The best error message is the one that never shows up. It is always better to prevent errors from happening in the first place by guiding users in the right direction ahead of time. But, when errors do arise, well-designed error handling helps teach users how to use the app as you intended. In this article, Nick Babich will examine how the design of apps can be optimized to prevent user errors and how to create effective error messages in cases when errors occur independently of user input.