Regarding your point about using the mouse, I purposely "trained" my right thumb to be efficient at using the trackpad so that I don't have to lift my right han

Regarding your point about using the mouse, I purposely "trained" my right thumb to be efficient at using the trackpad so that I don't have to lift my right hand away from the keyboard. The thumb hurts a bit, but it's worth the effort. This technique works really well on my other Dell laptop, but I haven't developed the same skills for the Macbook large trackpad. Especially with the Mac, scrolling is a 2-finger operation instead of touching on the right edge of the pad so basically my right thumb now is a bit redundant (I just realize this when I type up this reply: but 99% of the time while typing, my right thumb is sticking up in the air, and my left thumb does it job of hitting Spacebar). This means that I'm losing 10% of typing power right off the bat with only 9 fingers in action! Something for me to start fixing.