Not many years ago I began playing the cello. Most people would say that what I am doing is “learning to play the cello”. But these words carry into our minds the strange idea that there exist two very different processes: (1) learning to play the cello; and (2) playing the cello. They imply that I will do the first until I have completed it, at which point I will stop the first process and begin the second. In short, I will go on “learning to play” until I have “learned to play” and then I will begin to play. Of course, this is nonsense. There are not two processes, but one. We learn to do something by doing it. There is no other way.