The paradox here is that the most effective UI would be one where you&#x27;d have minimal &quot;signs&quot; (text or otherwise) telling you what to do. The problem with this is that you&#x27;d have to _learn_ how to master it. What we have is a compromise. Something that tries to cater both to casual as well as power users.<p>I&#x27;m thinking about for example a swipe based touch interface. A lot of functions now are click here, then click there, when they could be done in a simple gesture. But the problem is that one would have to learn the gesture somehow in the first place. And people don&#x27;t read manuals, even if there were any nowadays.