“I am no longer accepting the things I cannot change. I am changing the things I cannot accept.” — Angela Davis
A good designer comes up with solutions that work. But a great designer can clearly describe his process, explain why each part of it is important to a given project and articulate the thoughts, ideas and choices made along the way.
The human brain is not optimised for the abstract thinking and data memorisation that websites often demand. Many usability guidelines are dictated by cognitive limitations.