> If Mozart could hear in his head how the music ought to go, Leonardo, judging from his sketches, could simply see in his mind’s eye how the machine should wor

> If Mozart could hear in his head how the music ought to go, Leonardo, judging from his sketches, could simply see in his mind’s eye how the machine should work or the painting should look. There seems to be some thing that allows creative construction of these things, in mind, as opposed to simple recall of the sounds or images, in mind. For example, Mozart might have been able to creatively "construct" the sound of his composures in his mind, but just because someone has heard a Mozart composure performed and then can recall it later, in mind, that fact doesn't make them a genius. It's both creating and hearing/seeing it first that makes it special.