Audiation - the ability to listen to or play music in your head without physically hearing any of it.
Just by reading notes on a page of sheet music, talented musicians can hear the music in their minds. Truly gifted musicians can hear a relatively complex piece of music played once and then repeat it, perfectly, note for note, on their preferred instrument. That's talent. It's hard to teach that to just anyone. This is the concept of audiation.
I bring up this musical analogy to illustrate a point. These skills are engrained and conceptualized deep within their psyche and motor functions just as deep as breathing or walking. We, gearheads, have our own concepts that are as commonly used and seemingly simply as notes on a page. But how often do we think about what they really mean?