When someone first uses a certain piece of software, they are unfamiliar with doing certain tasks. For example, if they are using a word processor, they may not know how to make certain words bold.
Interface designers will often lay out all functions and options in a toolbar so that the user can look through them to find what they need. However as the user becomes more familiar with using the software, the toolbar becomes mostly clutter. A way to address this problem is to have the software interface slowly change as the user becomes more familiar. For example, the program could suggest to hide certain toolbars and suggest to use keyboard shortcuts, decreasing clutter and increasing efficiency.
