[jraph]

It's also about doing less movement with the arm. I just got a big screen and my desire to avoid the mouse just increased a lot (increasing the cursor speed mitigates this a bit however). An external keyboard (that has a numpad) may force you to spread the arm a bit more than what is ideal.

It's also less cognitive load when the keyboard shortcuts are internalized. This may be worth it for operations you do a lot.

> Even if I must look it up in a physical dictionary, how long are we talking here?

This, however, takes an infinite time.