When we look at slow-motion video of people moving their fingers while touch-typing, or playing a fast musical piece like Charlie Parker’s Bird Gets the Worm or Rimsky-Korsakov’s Flight of the Bumblebee, we see that whatever their fingers are doing now, their hands and fingers begin to twist, curl, stretch, or contract, as they prepare to move into the next position that will be required. Their muscles seem to know just what to do, independent of their brains. What we call muscle memory is not literally in our muscles, but in the part of our brain that controls those muscles, united with
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