Computer keyboards are right hand biased. The number keys, like a ten key adding machine, is on the right side, thus accommodating right handed people.
Kelly: I definitely have to slide the keyboard over to use my left hand on the ten key pad. If I try to use my right hand I make too many mistakes. I end up using a free standing calculator 95% of the time.
Sandy’s year long journey – going from being a right-hander to left-hander, and Kelly’s parallel trip as a left-hander doing things as a right-hander.