I always felt like computers were meant to be used with at least a hand poised on the home row, because without that arsenal of verbs things just take too long. As a power user, watching someone who isn’t familiar with all the shortcuts can put your patience under observation. To some folks, everything about the desktop is a hindrance, like swimming in molasses.
But to the geeky or trained, the desktop is a fount of power and speed. Documents are side by side, text flies from here to there, IMs are answered and dismissed, mockups reloaded, batches processed, all with tiny movements of the fingers. For those of us who work all day on computers, touch interfaces are not an impending disruption. —Signal vs. Noise