This principle seems obvious, but there are too many interfaces that violate it. Thus, a blog post

Here is my talk from FDConf, Minsk about feedback in the user interface

A slider is a simple user interface control where you adjust some value by dragging a handle in a groove

I’ve recently designed the new user interface for Mimic, a web developer tool for mocking server responses in a browser

Immediate feedback is one of the core principles of good user interface design. But what if the data is unavailable for the feedback?