I think another example of this would be using something like Adobe Photoshop or Illustrator. Switching between tools can be accomplished by clicking an icon, a

I think another example of this would be using something like Adobe Photoshop or Illustrator. Switching between tools can be accomplished by clicking an icon, a drop down, or some other GUI element. However, once you get to a certain level of skill, it becomes faster to just use the keyboard shortcuts. For a novice, it's more forgiving. But for the expert, it's possible to be very efficient. It's also possible to go too far the other way too. Not to date myself too much, but an old example of too much "expert" levels was back in the DOS days with Word Perfect. Keyboard shortcuts were the only way to do things (like formatting). So you either learned the magic codes (with three extra/meta operations per code) or you kept a cheat sheet on the keyboard itself. That was a learning curve to get to 'power-user' status.