Earlier quoted context omitted.
I've been typing on keyboards for the past 20 years, no pains at all. I credit it to Dvorak, myself.
Some people seem to be immune to it, you might be one of the lucky few. Make no mistake, though: Dvorak is an aggravating factor in carpal tunnel syndrome. The faster you type by moving your fingers only and not your hands, the more likely you are to start feeling the onset of CTS. Ironically, the best way to make sure you won't suffer from CTS is by typing with just two fingers.
It would be nice to have some hard data.