Lets go back in time, to Windows 3.x. Microsoft added games to the operating system to train users how to use new interactions. As Jared Spool explains in his article, one of the conditions to make design familiar, is a condition where “The user is being trained, but in a way that seems natural.” Jared talks about the ‘gap’ between current and target knowlege and how training helps to bridge it. I think the motivation level of this training will excel the learning process therefor bridging the gap faster. This is why Microsoft’s idea of using games to motivate people to learn these new interactions was a good one. Each game taught and trained users a specific new interaction. Solitare taught users how drag&drop, Minesweeper trained users to left/right click super fast by making a game that required a user to use a lot of mental effort for the main goal, in which with practice, improved automatic motor skills.(James Hunt gives more examples about windows 3.x games, worth reading.) Think about driving a car for example. First you’re thinking how to operate it, but when your focus changes to safely reaching your destination, operating the car has become automatic. When the operation of a device becomes automatic, we can surely say that it has become intuitive(familiar).