While I have often said that a lot of UI changes are simply eye candy, and add nothing important other than “bling” to a design, not all UI changes fall into that category. However, looking back, I noticed my posts have beat around this huge unaddressed important distinction of UI design that pretty much no company and very few active designers today seems to completely understand, judging from the latest and “greatest” products that are just as confusing for experienced users as they are for newbies.
While, we all seem to inherently understand some form of graphic design language, few aside from UI designers are conscious of it. And even fewer of the professionals understand this graphic design language has rules and conventions based on solid interaction principles. They seem to take for granted, that this control is a certain way without question, and either they use it improperly or worse, they break the convention. Both of these problems are caused because the UI designer does not know the reason behind the convention. I am sure many UI designers will rebuff me — and know the reasons behind certain choices, but not all. The problem is, if the designer has read literature or learned UI from someone else that omitted the explanations and reasoning behind the conventions, they only have half an education.