Why do you need a number on a screen to tell you what gear you are in?
Listen to the engine, feel the car etc...
You should be able to tell what gear you are in without a screen displaying it for you...
He's talking about when you're cruising around, then decide you want to start shifting.
Basically, a spontaneous decision to downshift before taking a corner.
Sure its easy to know what gear you're in if you pay attention to all the shift points the entire time you're cruising around, but who does that?
Also the shifts are so smooth, that if you had the radio on, you couldn't feel or hear it , especially at cruising speed.