Right. I use ten fingers to type. Sometimes I don't even use all ten. If I feel like being lazy, I'll type with one hand. Sometimes I scroll my trackball with a

Right. I use ten fingers to type. Sometimes I don't even use all ten. If I feel like being lazy, I'll type with one hand. Sometimes I scroll my trackball with a single finger while taking a drink of coffee. I don't want all ten of my fingers on an interface at all times.