I belive that UI should be invisible.We tend to forget that we consider anything physical we interact with invisible. It is because of how those things are ingrained in the notions of evolution and history. Gone are the days when programmers had a reign over the logic of the interface as logic isn't what drives interaction. Humans feel. The feeling of a button or a sequence of them should have no obstructions. But why even have buttons? Why can't we the interface be as if there is no interface?Make it invisible.This is my mission statement.