If it ain't broke, don't fix it. If it is broke, make sure people still know how to use it after you're done fixing it. As an aside, I've heard it theorized t

If it ain't broke, don't fix it. If it is broke, make sure people still know how to use it after you're done fixing it. As an aside, I've heard it theorized that part of the reason Microsoft tends to do massive GUI facelifts every few releases, is to keep the Windows/Office training industry going strong.